Figure 2.
Suppression of megakaryocyte production by ITP plasma. CD34+-rich cells were cultured in media containing rHuMGDF and either ITP or control plasma. After harvesting the cultures on day 10, the total number of megakaryocytes was determined [cell number (determined by direct counting of each culture) × % megakaryocytes (determined from FACS data)]. % Control megakaryocytes = mean total megakaryocytes in ITP cultures/mean total megakaryocytes in control cultures × 100.