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A vaccine expert explains that such answers likely won’t come until a vaccine has already been approved and administered to millions of people.

An imaging agent reveals aggregated tau protein in the brain during PET scans and could improve the diagnosis of neurodegenerative diseases, particularly tauopathies.

The tropical net-casting spider Deinopis spinosa joins several other arachnid species that can hear sounds from afar without the help of a web, or even ears—an ability that aids its unique hunting tactics.

An analysis of the genomes of people from 50 ethnolinguistic groups in Africa spots 62 genes under positive selection and 3 million more genetic variants than previously documented.

The discovery puts a nail in the coffin of a long-held assumption about the limits of where the essential process can occur.

Using an elaborate apparatus, researchers find that the virus spreads via aerosolized particles between ferrets more than a meter apart.

So far, the bulk of the identified water molecules are too distant from one another to form ice or liquid.

Bat species use different strategies to dampen immune activation in response to viruses.

Recent data show that the drug bamlanivimab, also known as LY-CoV555, does not appear to help those with severe cases of COVID-19, but trials continue for milder cases.

Repeat COVID-19 cases could offer clues about people’s immunity to the novel coronavirus and how to vaccinate against it.

The decision comes after Purdue Pharma, founded by the Sackler family, announced it would plead guilty to federal criminal charges for its role in the opioid epidemic.

If approved, Proposition 14 would authorize the state to sell $5.5 billion in bonds to extend the life of CIRM, which funds stem cell research. The ballot measure has its critics.