Surgery

Virus found in pig heart used in human transplant

Researchers trying to learn what killed the first person to receive a heart transplant from a pig have discovered the organ harbored an animal virus but cannot yet say if it played any role in the man's death.

Medical research

Scientists illuminate mechanism of common drug target

Roughly a third of all drugs approved by the U.S. Food and Drug Administration target a large family of biomolecules, known as G protein-coupled receptors (GPCRs), whose job is to trigger cellular responses to extracellular ...

Medications

EXPLAINER: COVID-19 pills must be taken within 5 days

Newly infected COVID-19 patients have two treatment options that can be taken at home. But that convenience comes with a catch: The pills have to be taken as soon as possible once symptoms appear.

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