Thrombopoietin, but not cytokines binding to gp130 protein-coupled receptors, activates MAPKp42/44, AKT, and STAT proteins in normal human CD34+ cells, megakaryocytes, and platelets. - Majka,M.; Ratajczak,J.; Villaire,G.; Kubiczek,K.; Marquez,L.A.; Janowska-Wieczorek,A. (Exp Hematol, 2002)