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Mammoth DNA Breaks Record for World's Oldest Sequence

The First Example of Hybrid Speciation in Ancient DNA
The new study has also amplified the ability for researchers to track the evolutionary process of speciation – the formation of new and distinct species. A
Nature press release states that this process generally occurs “over time periods that are thought to be beyond the limits of DNA research.”
A tusk from a woolly mammoth discovered in a creek bed on Wrangel Island in 2017. (Credit: Love Dalén)
Nonetheless, the scientists’ study of the mammoth DNA suggests that there was not one, but two different lineages of mammoth alive during the Early Pleistocene in the region of what is now eastern Siberia. Adycha and Chukochya are believed to be members of a species that spawned the woolly mammoth, but Krestovka appears to come from an unknown, and possibly entirely new, mammoth lineage. Tom van der Valk, the study’s lead author and a bioinformatician at the University of Uppsala in Sweden, explains the ....

Sakha Yakutiya , United States , Wrangel Island , Chukotskiy Avtonomnyy Okrug , Uppsala Lan , Orenburgskaya Oblast , Gleb Danilov , Russian Academy Of Sciences , Centre For Palaeogenetics , University Of Uppsala , Swedish Museum Of Natural History , Middle Pleistocene , Love Dal , Ancient Mammoth , Broken Records , Russian Academy , Yukon Territory , First Example , Hybrid Speciation , Early Pleistocene , North America , North American Columbian , Swedish Museum , Natural History , Ice Age , Bio Chemical ,

Researchers find CXCR6 gene plays a role in COVID-19 severity

Researchers in the United States have conducted a study demonstrating that a gene called CXCR6 (C-X-C Motif Chemokine Receptor 6) may play an important role in determining the severity of COVID-19. ....

United States , New York , Cornell University , Sally Robertson , C Xc Motif Chemokine Receptor , Texas Health Science Center , Coronavirus Disease Covid 19 , Sars Cov 2 , Corona Virus , Gene Expression , Intensive Care , ஒன்றுபட்டது மாநிலங்களில் , புதியது யார்க் , கார்னெல் பல்கலைக்கழகம் , சாலி ராபர்ட்சன் , டெக்சாஸ் ஆரோக்கியம் அறிவியல் மையம் , கொரோனா வைரஸ் , கீந் வெளிப்பாடு , தீவிர பராமரிப்பு ,

Could measles virus vectors be used for a new COVID-19 vaccine?

Could measles virus vectors be used for a new COVID-19 vaccine?
Vaccines may come in several forms, one of the most common being live-attenuated. Live-attenuated vaccines are a weakened form of the virus, created by genetic modification, and usually provide long-lasting immunity. Many research groups and companies have been working tirelessly since the outbreak of COVID-19 to develop vaccines by a number of routes, though no live-attenuated vaccine has thus far been approved.
A paper recently released on the pre-print server
bioRxiv by a research team at the Institut Pasteur in France describes the successful development of such a vaccine utilizing a measles virus vector. ....

Institut Pasteur , Michael Greenwood , Image Credit , Coronavirus Disease Covid 19 , Sars Cov 2 , Immune Response , Spike Protein , நிறுவனம் பாஸ்டர் , மைக்கேல் கிரீன்வுட் , படம் கடன் , நோய் எதிர்ப்பு சக்தி பதில் , நானோ துகள்கள் , ஸ்பைக் ப்ரோடீந் ,

Researchers use zebrafish to study cancer-immune interactions

Researchers use zebrafish to study cancer-immune interactions
Cancer researcher Rita Fior uses zebrafish to study human cancer. Though this may seem like an unlikely match, her work shows great promise with forthcoming applications in personalized medicine.
The basic principle of Fior s approach relies on transplanting human cancer cells into dozens of zebrafish larvae. The fish then serve as living test tubes where various treatments, such as different chemotherapy drugs, can be tested to reveal which works best. The assay is rapid, producing an answer within four short days.
Some years ago, when Fior was developing this assay, she noticed something curious. The majority of human tumor cells successfully engrafted in the fish, but some tumors didn t. They would just disappear within a day or two. However, when I treated the transplanted fish with chemotherapy, these tumors would not disappear anymore. They engrafted much more , she recalls. ....

Vanda Povoa , Emily Henderson , Nature Communications , Champalimaud Centre For The , Rita Fior , Champalimaud Centre , Doctoral Student , Immune System , எமிலி ஹென்டர்சன் , இயற்கை தகவல்தொடர்புகள் , ரீட்டா பீோர் , முனைவர் மாணவர் , நோய் எதிர்ப்பு சக்தி அமைப்பு , நோயெதிர்ப்பு சிகிச்சை ,

Scientists Clone Endangered Black-Footed Ferret For The First Time And She's Adorable

Researchers have successfully cloned a highly endangered ferret species using cells that were frozen more than three decades ago, according to news reports. ....

New York , United States , Ryan Phelan , Elizabeth Ann , Wildlife Service , New York Times , World Wildlife Fund For Nature , Association Of Zoos , North America , World Wildlife Fund , Viagen Pets , San Diego Zoo Global , Amp Quot , Black Footed , புதியது யார்க் , ஒன்றுபட்டது மாநிலங்களில் , ரியான் ஃபெலன் , எலிசபெத் ஆண்டு , வனவிலங்கு சேவை , புதியது யார்க் முறை , உலகம் வனவிலங்கு நிதி க்கு இயற்கை , சங்கம் ஆஃப் ஸூஸ் , வடக்கு அமெரிக்கா , உலகம் வனவிலங்கு நிதி , சான் டியாகோ ஸூ உலகளாவிய , கருப்பு கால் ,