An antibody cocktail designed to prevent and treat COVID-19 is now entering late-stage clinical trials, according to reports.

When naturally infected with COVID-19, the body generates Y-shaped molecules called antibodies that latch onto the virus and mark it for destruction, or hinder its ability to infect healthy cells, Live Science previously reported. These antibodies can be drawn from recovered COVID-19 patients and injected into sick patients to bolster their immune systems against the virus, a treatment known as convalescent plasma therapy.