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What did Megalodon eat? Anything it wanted — including other predators.

New Princeton research shows that prehistoric megatooth sharks — the biggest sharks that ever lived — were apex predators at the highest level…

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New Princeton research shows that prehistoric megatooth sharks — the biggest sharks that ever lived — were apex predators at the highest level ever measured.

Credit: Photo by Harry Maisch

New Princeton research shows that prehistoric megatooth sharks — the biggest sharks that ever lived — were apex predators at the highest level ever measured.

Megatooth sharks get their name from their massive teeth, which can each be bigger than a human hand. The group includes Megalodon, the largest shark that ever lived, as well as several related species.

While sharks of one kind or another have existed since long before the dinosaurs — for more than 400 million years — these megatooth sharks evolved after the dinosaurs went extinct and ruled the seas until just 3 million years ago.

“We’re used to thinking of the largest species — blue whales, whale sharks, even elephants and diplodocuses — as filter feeders or herbivores, not predators,” said Emma Kast, a 2019 Ph.D. graduate in geosciences who is the first author on a new study in the current issue of Science Advances. “But Megalodon and the other megatooth sharks were genuinely enormous carnivores that ate other predators, and Meg went extinct only a few million years ago.”

Her adviser Danny Sigman, Princeton’s Dusenbury Professor of Geological and Geophysical Sciences, added, “If Megalodon existed in the modern ocean, it would thoroughly change humans’ interaction with the marine environment.”

A team of Princeton researchers has now discovered clear evidence that Megalodon and some of its ancestors were at the very highest rung of the prehistoric food chain – what scientists call the highest “trophic level.” Indeed, their trophic signature is so high that they must have eaten other predators and predators-of-predators in a complicated food web, say the researchers.

“Ocean food webs do tend to be longer than the grass-deer-wolf food chain of land animals, because you start with such small organisms,” said Kast, now at the University of Cambridge, who wrote the first iteration of this research as a chapter in her dissertation. “To reach the trophic levels we’re measuring in these megatooth sharks, we don’t just need to add one trophic level — one apex predator on top of the marine food chain — we need to add several onto the top the modern marine food web.”

Megalodon has been conservatively estimated at 15 meters long — 50 feet — while modern great white sharks typically top out around five meters (15 feet).

To reach their conclusions about the prehistoric marine food web, Kast, Sigman and their colleagues used a novel technique to measure the nitrogen isotopes in the sharks’ teeth. Ecologists have long known that the more nitrogen-15 an organism has, the higher its trophic level, but scientists have never before been able to measure the tiny amounts of nitrogen preserved in the enamel layer of these extinct predators’ teeth.

“We have a series of shark teeth from different time periods, and we were able to trace their trophic level versus their size,” said Zixuan (Crystal) Rao, a graduate student in Sigman’s research group and a co-author on the current paper.  

One way to tuck in an extra trophic level or two is cannibalism, and several lines of evidence point to that in both megatooth sharks and other prehistoric marine predators.

The nitrogen time machine

Without a time machine, there’s no easy way to recreate the food webs of extinct creatures; very few bones have survived with teeth marks that say, “I was chewed on by a massive shark.”

Fortunately, Sigman and his team have spent decades developing other methods, based on the knowledge that the nitrogen isotope levels in a creature’s cells reveal whether it is at the top, middle or bottom of a food chain.

“The whole direction of my research team is to look for chemically fresh, but physically protected, organic matter — including nitrogen — in organisms from the distant geologic past,” said Sigman.

A few plants, algae and other species at the bottom of the food web have mastered the knack of turning nitrogen from the air or water into nitrogen in their tissues. Organisms that eat them then incorporate that nitrogen into their own bodies, and critically, they preferentially excrete (sometimes via urine) more of nitrogen’s lighter isotope, N-14, than its heavier cousin, N-15.

In other words, N-15 builds up, relative to N-14, as you climb up the food chain.

Other researchers have used this approach on creatures from the recent past — the most recent 10-15 thousand years — but there hasn’t been enough nitrogen left in older animals to measure, until now.

Why? Soft tissue like muscles and skin are hardly ever preserved. To complicate matters, sharks don’t have bones — their skeletons are made of cartilage.

But sharks do have one golden ticket into the fossil record: teeth. Teeth are more easily preserved than bones because they are encased in enamel, a rock-hard material that is virtually immune to most decomposing bacteria.

“Teeth are designed to be chemically and physically resistant so they can survive in the very chemically reactive environment of the mouth and break apart food that can have hard parts,” Sigman explained. And in addition, sharks aren’t limited to the 30 or so pearly whites that humans have. They are constantly growing and losing teeth — modern sand sharks lose a tooth every day of their decades-long lives, on average — which means that every shark produces thousands of teeth over its lifetime.

“When you look in the geologic record, one of the most abundant fossil types are shark teeth,” said Sigman. “And within the teeth, there is a tiny amount of organic matter that was used to build the enamel of the teeth — and is now trapped within that enamel.”

Since shark teeth are so abundant and are preserved so well, the nitrogen signatures in enamel provide a way to measure status in the food web, whether the tooth fell from a shark’s mouth millions of years ago or yesterday.

Even the largest tooth has only a thin casing of enamel, of which the nitrogen component is only a tiny trace. But Sigman’s team has been developing more and more refined techniques for extracting and measuring these nitrogen isotope ratios, and with a little help from dentist drills, cleaning chemicals and microbes that ultimately convert the nitrogen from within the enamel into nitrous oxide, they’re now able to precisely measure the N15-N14 ratio in these ancient teeth.

“We’re a little bit like a brewery,” he said. “We grow microbes and feed our samples to them. They produce nitrous oxide for us, and then we analyze the nitrous oxide they produced.”

The analysis requires a custom-built, automated nitrous oxide preparation system that extracts, purifies, concentrates and delivers the gas to a specialized stable isotope ratio mass spectrometer.

“This has been a multiple-decades-long quest that I’ve been on, to develop a core method to measure these trace amounts of nitrogen,” Sigman said. From microfossils in sediments, they moved on to other types of fossils, like corals, fish ear bones and shark teeth. “Next, we and our collaborators are applying this to mammalian teeth and dinosaur teeth.”

A deep dive into the literature during lockdown

Early in the pandemic, while her friends were making sourdough starters and bingeing Netflix, Kast pored through the ecologic literature to look for nitrogen isotope measurements of modern marine animals.

“One of the cool things that Emma did was really dig into the literature — all the data that’s been published over decades — and relate that to the fossil record,” said Michael (Mick) Griffiths, a paleoclimatologist and geochemist at William Patterson University and a co-author on the paper.

As Kast quarantined at home, she painstakingly built up a record with more than 20,000 marine mammal individuals and more than 5,000 sharks. She wants to take things much further. “Our tool has the potential to decode ancient food webs; what we need now is samples,” said Kast. “I’d love to find a museum or other archive with a snapshot of an ecosystem — a collection of different kinds of fossils from one time and place, from forams near the very base of the food web, to otoliths — inner ear bones — from different kinds of fish, to teeth from marine mammals, plus shark teeth. We could do the same nitrogen isotope analysis and put together the whole story of an ancient ecosystem.”

In addition to the literature search, their database includes their own samples of shark teeth. Co-author Kenshu Shimada of DePaul University connected with aquariums and museums, while co-authors Martin Becker of William Patterson University and Harry Maisch of Florida Gulf Coast University gathered megatooth specimens on the sea floor.

“It’s really dangerous; Harry’s a dive master, and you really need to be an expert to get these,” said Griffiths. “You can find little shark teeth on the beach, but to get the best-preserved samples, you need to go down to the bottom of the ocean. Marty and Harry have collected teeth from all over the place.”

He added: “It’s been a really collaborative effort to obtain the samples to pull this together. In general, collaborating with Princeton and other regional universities is really exciting because the students are amazing and my colleagues there have been really great to work with.”

Alliya Akhtar, a 2021 Ph.D. graduate from Princeton, is now a postdoctoral researcher in Griffiths’ lab. 

“The work I did for my dissertation (looking at isotopic composition of seawater) posed as many questions as it answered, and I was incredibly grateful to have the opportunity to continue working on some of these with a collaborator/mentor I respect,” Akhtar wrote in an email. “I’m most excited about all the work that is still to be done, all the mysteries yet to be solved!”

“Cenozoic megatooth sharks occupied extremely high trophic positions,” by Emma R. Kast, Michael L. Griffiths, Sora L. Kim, Zixuan C. Rao, Kenshu Shimada, Martin A. Becker, Harry M. Maisch, Robert A. Eagle, Chelesia A. Clarke, Allison N. Neumann, Molly E. Karnes, Tina Lüdecke, Jennifer N. Leichliter, Alfredo Martínez-García, Alliya A. Akhtar, Xingchen T. Wang, Gerald H. Haug and Daniel M. Sigman appears in the June 22 issue of Science Advances (DOI: 10.1126/sciadv.abl6529). This study was supported by the Scott Fund of the Department of Geosciences, Princeton University, by grants from the National Science Foundation Sedimentary Geology and Paleobiology (1830581 to M.L.G. and M.A.B.; 1830638 to R.A.E.; 1830480 to S.L.K.; and 1830858 to K.S.), the European Research Council Consolidator Grant Agreement 681450 (to J.N.L., awarded to T. Tütken), the Max Planck Society (to A.M-G. and G.H.H.), and the American Chemical Society Award, Petroleum Research Fund Undergraduate New Investigator Grant, PRF #54852-UNI2 (to M.L.G.).


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Bolsonaro Indicted By Brazilian Police For Falsifying Covid-19 Vaccine Records

Bolsonaro Indicted By Brazilian Police For Falsifying Covid-19 Vaccine Records

Federal police in Brazil have indicted former President Jair…

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Bolsonaro Indicted By Brazilian Police For Falsifying Covid-19 Vaccine Records

Federal police in Brazil have indicted former President Jair Bolsonaro for falsifying his Covid-19 vaccine card in order to travel to the United States and elsewhere during the pandemic.

Federal prosecutors will review the indictment and decide whether to pursue the case - which would be the first time the former president has faced criminal charges.

According to the indictment, Bolsonaro ordered a top deputy to obtain falsified Covid-19 vaccine records of himself and his 13-year-old daughter in late 2022, right before he flew to Florida for a three-month stay following his election loss.

Brazilian police are also waiting to hear back from the US DOJ on whether Bolsonaro used said cards to enter the United States, which would open him up to further criminal charges, the NY Times reports.

Bolsonaro has repeatedly claimed not to have received the Covid-19 vaccine, but denies any involvement in a plan to falsify his vaccination records. A previous investigation by Brazil's comptroller general concluded that Bolsonaro's vaccination records were false.

The records show that Bolsonaro, a COVID-19 skeptic who publicly opposed the vaccine, received a dose of the immunizer in a public healthcare center in Sao Paulo in July 2021. [ZH: hilarious, Reuters calling the vaccine an 'immunizer.']

The investigation concluded, however, that the former president had left the city the previous day and didn't leave Brasilia until three days later, according to a statement.

The nurse listed in the records as having applied the vaccine on Bolsonaro denied doing so and was no longer working at the center. The listed vaccine lot was also not available on that date, the comptroller general's office said. -Reuters

"It's a selective investigation. I'm calm, I don't owe anything," Bolsonaro told Reuters. "The world knows that I didn't take the vaccine."

During the pandemic, Bolsonaro panned the vaccine - and instead insisted on alternative treatments such as Ivermectin, which has antiviral properties against Covid-19. For this, he was investigated by Brazil's congress, which recommended that the former president be charged with "crimes against humanity," among other things, for his actions during the pandemic.

In May, Brazilian police raided Bolsonaro's home, confiscating his cell phone and arresting one of his closest aides and two of his security cards in connection to the vaccine record investigation.

Brazil's electoral court ruled that Bolsonaro can't run for public office until 2030 after he suggested that the country's voting system was rigged. For that, he has to sit out the 2026 election.

Tyler Durden Tue, 03/19/2024 - 11:00

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International

This gambling tech stock is future-proofing the world’s casinos

Supported by the universal thrill of a quick payout and the need for leisure, gambling stocks make a compelling case for long-term returns.
The post This…

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Supported by the universal human thrill of a quick payout, and the need for leisure and entertainment to bring enjoyment to adult life, casinos will remain essential spaces for people to dream and play for the foreseeable future, making gambling stocks a prospective space to look for long-term returns.

According to Research and Markets, the global casino industry was valued at US$157.5 billion in 2022, and it will grow to US$224.1 billion by 2030 at a compound annual growth rate of 4.5 per cent. This trend includes:

Approximately 100 million gamblers in the United States, who generated US$66.5 billion in revenue in 2023, a 10 per cent gain from 2022, which itself was a record year A little fewer than 20 million gamblers in Canada, who generated about C$15 billion in revenue in 2023 A global addressable market of thousands of casinos, and more than 4.2 billion people who gamble at least once every year, according to a 2016 study by Casino.org

The main challenge with attracting these billions through casino doors is they sway heavily toward middle age. The mean age of U.S. casino visitors has hovered around 50 for the past decade, with a similar trend across the world, forcing casinos to attract younger, tech-savvy customers, many with less gambling experience, to continue growing profits for their stakeholders over the long term.

Investors seeking exposure to a leadership position in building the bridge between casinos and the next generation of gamblers should evaluate Jackpot Digital (TSXV:JJ). The Vancouver-based company is a manufacturer of dealerless electronic table games that deliver immersive experiences tailored to the digital age, while earning casinos attractive returns on investment.

The gambling technology stock benefits from no direct competition in the dealerless poker space, with orders spanning North America, Europe, Asia, Africa and the Caribbean, a long-established presence with major cruise ship brands, such as Carnival, Princess Cruises and Holland America, and a growing land-based presence with orders or ongoing installations across 12 U.S. states. Its highlight partnership to date is a master services agreement with Penn Entertainment, the country’s largest regional gaming operator with 43 properties across 20 states.

Jackpot Digital’s differentiated technology and well-rounded management team are at the heart of its success in landing several blue-chip casino gaming companies as customers.

Jackpot Blitz

The gambling technology stock’s flagship product, Jackpot Blitz, is a dealerless poker table featuring three of the world’s most popular variations – Texas Hold’ em, Omaha, and Five-Card-Omaha – brought to life through slick 4k graphics on a 75-inch touchscreen, and offered in three formats – pot-limit, no-limit and fixed-limit – designed to attract a diversity of revenue from casual to experienced players.

Spokesperson and NFL championship-winning coach Jimmy Johnson explains the benefits of the Jackpot Blitz. Source: Jackpot Digital.

The table also comes equipped with house-banked mini-games, including blackjack, baccarat and video poker, as well as side bets on the main poker game, such as Bet the Flop, all of which keep players engaged and entertained between, and even during, poker hands. The stunning Jackpot Blitz machine also offers multi-venue “Bad Beat” jackpot functionality, allowing casinos to offer a “Poker Powerball” with massive Jackpots, further enhancing the attractiveness of Jackpot Blitz to new players.

It’s by striking a balance between the needs of the modern gambler, and efficiency and profitability that in-person operators couldn’t hope to match – unless they ordered the machine for themselves – that Jackpot Digital has earned itself the top spot in dealerless poker.

Player benefits

When a veteran or novice gambler takes a seat at the Jackpot Blitz, his or her experience begins with an easy-to-use interface, laid out in a modern and stylish design, programmed to respond to hand gestures that bring real casino play into the digital age, including card bending and chip jingling.

Source: Jackpot Digital.

The table’s intuitive controls, combined with instant payouts and its dealerless nature, translate into faster game play, which maximizes playing time and player excitement, while minimizing human error and the intimidation new gamblers might feel about approaching an analog poker table. The gambling technology stock’s in-house development team is also constantly working on new games to keep content fresh, with a special focus on bringing international games and regional versions of poker to casino audiences in Asia, South America and the Indian subcontinent.

As hands are laid down and pots pile up, players can also track game stats in real time, which inform future strategy and enhance the thrill of the moment with an added element of competition.

Operator benefits

From an operator’s perspective, a floor of automated gaming tables can meaningfully and instantly reduce casino staff expenditures and management pain points, while avoiding wage inflation, labour shortages and supply costs.

The Blitz is no slouch on revenue either, dealing more hands per hour, resulting in higher revenue and higher profitability, which is further enhanced by onboard side bets and mini-games that can be played while players are engaged in a poker hand.

The Jackpot Blitz’s economics are attractive to operators thanks to its ability to accommodate non-stop play, while monetizing downtime through side games and bets. While a human dealer must spend time shuffling, interacting with players, and consulting with colleagues, the Jackpot Blitz can accept wagers 100 per cent of the time, making sure gamblers get the action they came for and operators see a return on their investment.

Source: Jackpot Digital.

Beyond gaming revenue, casinos are further incentivized to onboard the Jackpot Blitz because of its fully customizable advertising functions, including logos, card backs, chips and felt colors, all of which bolster casino culture and enable the pursuit of revenue from third-party advertising partners.

The Blitz ties its value proposition together by generating automatic reports – including demographics and consumer behaviour through a rewards card system – and plugging directly into most back-end management systems, saving casinos the hassle of manual tracking, while also minimizing tampering, money-laundering and theft through the use of isolated servers.

Whether it’s streamlining the player experience or putting automation at the service of operators’ bottom lines, Jackpot Digital’s flagship product is positioned to create value, and plenty of it.

Jackpot Digital’s path to profitability

After existing as an exclusively cruise-ship-based operation since 2015, Jackpot Digital suffered a steep decline in revenue during the COVID pandemic, falling from C$2.18 million in 2019 to C$0.42 million in 2021.

Management quickly pivoted in the face of uncertainty, redesigning the Blitz to execute on a land-based expansion strategy – backed by Gaming Labs International certification in fall 2023 – which is bringing about a successful turnaround after the re-emergence of the casino business. Revenue more than tripled to C$1.43 million in 2022, and reached C$1.57 million through three quarters of 2023, with the company expecting to ramp up significant recurring revenue after it installs several dozen machines currently in its backlog.

The Jackpot Blitz electronic gaming table in action. Source: Jackpot Digital.

The first installation of land-ready Jackpot Blitz machines is now completed at the Jackson Rancheria Casino in California, as the company announced today. The three-machine installation marks a new era of growth for the company, having announced 25 Blitz deals since November 2021 (slide 12), with many more across Canada and the United States in the works, in addition to a strong pipeline in Asia and Europe.

“Jackpot Digital could be a profitable company right now if it only focused on care and maintenance of the revenues it currently generates. But that’s not why we’re here,” Mathieu McDonald, Vice President of Corporate Development at Jackpot Digital, said in a recent interview with Stockhouse. “We intend to scale up to many multiples of the tables we have out right now, with the potential for up to 2,000 tables over the next three to five years.”

According to McDonald, the company is fielding three to five inquiries per week about the Blitz from casinos around the world that recognize the machines’ first-mover advantage in dealerless poker and potential expansion into other games in need of automation.

Jackpot Digital’s ambitious plan of action is supported by a management team of proven gambling, finance, advertising and legal professionals, many of which have been serving Jackpot stakeholders for more than two decades.

A long-tenured management team

The management team behind Jackpot Digital is led by Jake Kalpakian, who has served as president and chief executive officer since 1999, including under the gambling technology stock’s former incarnation as Las Vegas From Home.com Entertainment Inc. Kalpakian brings more than 30 years of experience managing small-cap publicly listed companies, granting him a steady hand when it comes to maneuvering through the volatility of the economic cycle.

Kalpakian’s efforts are supported by three directors whose well-rounded expertise positions Jackpot Digital for long-term sustainable growth:

Gregory T. McFarlane, a director at Jackpot Digital since 1999, previously ran an independent advertising firm and holds a degree in mathematics from the University of Toronto. McFarlane is also a co-founder of the popular Control Your Cash personal finance website. Chief financial officer Neil Spellman, a director at the company since 2002, boasts an almost two-decade track record as vice president at Wall Street firm Smith Barney, where he developed a multi-industry understanding of the journey to profitability. Finally, Alan Artunian, a director since 2017, currently serves as CEO of Nice Guy Holdings, a corporate and legal consulting company advising clients across a diversity of sectors.

Guided by a strategic management team, and benefiting from a macro-trend toward casino automation, Jackpot Digital is on course to ride a wave of millions of gamblers looking for an elegant, tech-informed alternative to traditional in-person play.

A multi-bagger opportunity

The Jackpot Digital opportunity sets up savvy investors who recognize the soundness of the company’s value proposition. The tremendous risk/reward value of Jackpot Digital gives investors the opportunity to ride the macro-trend toward casino automation, as deals for the Blitz keep pouring in, the company adds games to its portfolio, and the global casino industry adds hundreds of billions in revenue through this decade.

Join the discussion: Find out what everybody’s saying about this gambling technology stock on the Jackpot Digital Bullboard.

This is sponsored content issued on behalf of Jackpot Digital, please see full disclaimer here.

The post This gambling tech stock is future-proofing the world’s casinos appeared first on The Market Online Canada.

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Gates-backed PhIII study tuberculosis vaccine study gets underway

A large study of an experimental vaccine for the world’s biggest infectious disease has finally kicked off in South Africa.
The Bill & Melinda Gates…

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A large study of an experimental vaccine for the world’s biggest infectious disease has finally kicked off in South Africa.

The Bill & Melinda Gates Medical Research Institute (MRI) will test a tuberculosis vaccine’s ability to prevent latent infections from causing potentially deadly lung disease. Last summer the nonprofit said it would foot $400 million of the estimated $550 million cost of running the 20,000-person Phase III trial.

It’s a pivotal moment for a vaccine whose origins date back 25 years when scientists identified two proteins that triggered strong immunity to the bacterium that causes tuberculosis. A fusion of those proteins, paired with the tree bark-derived adjuvant that helps power GSK’s shingles shot, comprise the so-called M72 vaccine.

Thomas Scriba

After decades of failures in the field, the vaccine impressed scientists in 2018 when GSK found that it was 54% efficacious at preventing lung disease in a 3,600-person Phase IIb study.

But the Big Pharma decided that a full-blown trial was too expensive to conduct on its own. Gates MRI stepped in to license the vaccine in early 2020, right before the Covid pandemic shifted global vaccine priorities towards the coronavirus, further stalling the tuberculosis shot.

“There’s been frustration that it’s taken so long to get this trial up and running,” Thomas Scriba, deputy director of immunology for the South African Tuberculosis Vaccine Initiative, told Endpoints News last summer.

At last, the vaccine is getting a chance to prove itself in a bigger study. If successful, it could lead to the first new shot for tuberculosis in over a century.

Emilio Emini, CEO of the Gates MRI, told Endpoints that the initial results may come in roughly four to six years. “Hopefully this will galvanize a refocus on TB,” he said. “It’s been ignored for many, many years. We can’t ignore it anymore.”

A substantial impact

Even though an existing vaccine helps protect babies and children against severe tuberculosis, the bacterium responsible for the disease still causes roughly 10 million new cases and 500,000 deaths each year.

Emilio Emini

By vaccinating adolescents and adults who test positive for infections but don’t have symptoms of lung disease, the Gates MRI hopes the shot will help prevent mild infections from becoming severe ones, curtail transmission of the bug, which is predominantly driven by people with lung disease, and reduce deaths.

“The impact would be substantial,” Emini said. But he cautioned that the biology behind mild and severe diseases is still mysterious. “The reality is that no one really knows what keeps it under control.”

The study, which will take place at 60 sites across seven countries, will include some people who are not infected with tuberculosis to ensure that the vaccine is safe in that broader population.

“Having to pre-test everybody is not going to make the vaccine easy to deliver,” Emini said. If the vaccine is ultimately approved, it will likely be used in targeted communities with high tuberculosis, rather than across a whole country, he added. “In practice, you would immunize everybody in those populations.”

Emini described the Gates MRI’s rights to the vaccine as “close to a worldwide license.” GSK retained rights to commercialize the vaccine in certain countries but declined to specify which ones.

A spokesperson for GSK said that the company “has around 30 assets under development specifically for global health … none of which are expected to generate significant return on investment.”

“It is not sustainable or practical in the longer term for GSK to deliver all of these alone. So we continue to work on M72, but in partnership with others,” the spokesperson added.

If the shot works, Emini said that the Gates MRI will sublicense it to a manufacturer that will be responsible for making and marketing the vaccine. The details are still being worked out, he noted.

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