The NBA has been looking for ways to support research of the pandemic since March—including recommending players who have successfully recovered from coronavirus to donate blood to the National COVID-19 Convalescent Plasma Project, which is also run by Mayo Clinic. So far, close to 400 people from about half of the league’s teams have voluntarily participated in Mayo Clinic’s antibodies study. Portland, Minnesota, Cleveland, and Boston are among those teams, and more teams may join when their facilities open, league sources say. According to Sampathkumar, over 1,000 total people have contributed to the Mayo Clinic’s study. Participants from the NBA receive both a vein puncture and a fingerstick blood draw at their respective team practice facilities using supplies that the Mayo Clinic shipped to team doctors. In addition to helping the research of antibodies, the tests help the league get a read on COVID-19’s spread amongst the NBA population.