When mice that had suffered a stroke were given blood from a healthy donor, they experienced less tissue and neurological damage.

White House officials hail convalescent plasma as a major breakthrough, but scientists say evidence supporting its effectiveness is still lacking.

By revealing that animals could develop immune responses against their own tissues, the physician-scientist established an entirely new field of science.

A blood biobank allows scientists to study the immune responses to the coronavirus among infected Biogen employees and their contacts.

The functional, respiring organelles appear to be present in the blood of healthy people, but their function is yet unclear.

Bats that share food with their hungry cage-mates stay close after being released.

A device that illuminates and oxygenates blood outside of the body before pumping it back in removes the gas by freeing hemoglobin from CO.

For the Physiology or Medicine award, Peter Ratcliffe, William Kaelin, and Gregg Semenza are credited with figuring out molecular and genetic responses to oxygen levels.

The physician and researcher challenged the Chinese government over her findings of widespread hepatitis and HIV contamination during blood collection.