plasma covid roldan

SEATTLE, WA - APRIL 17: Phlebotomist, Jenee Wilson carries COVID-19 convalescent plasma from a donor at Bloodworks Northwest on April 17, 2020 in Seattle, Washington. The plasma will be used in a new experimental treatment in hopes that the antibodies will help others still battling the COVID-19 disease. The plasma donation process, called plasmapheresis, separates blood plasma, from red and white blood cells and platelets, and returns the cells and platelets back to the donor. (Photo by Karen Ducey/Getty Images)