Antibody from SARS patient blocks coronavirus in lab

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An antibody first identified in a blood sample from someone who recovered from SARS in 2003 inhibits related coronaviruses, including one behind COVID-19, researchers say.

Researchers have put the antibody, called S309, on a fast-track development and testing path at Vir Biotechnology in the next step toward possible clinical trials.

“We still need to show that this antibody is protective in living systems, which has not yet been done,” says David Veesler, assistant professor of biochemistry at the University of Washington School of Medicine and co-senior author of the paper in Nature.

“Right now there are no approved tools or

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