AdvertisementHarvested Antibodies Now Being Tested As A Prevention Tool Against COVID-19July 29, 2020Richard HarrisfacebookEmailBlood plasma — the yellowish, cell-free portion that remains after red and white blood cells have been filtered out by a machine and returned to the plasma donor — is rich with antibodies. Plasma from recovered COVID-19 patients might prove useful in preventing infection as well as in treatment, scientists say. (Reuters)