Promotion of megakaryocyte progenitor expansion and differentiation by the c-MPL ligand thrombopoietin - Kaushansky, K; Lok, S; Holly, RD; Broudy, VC; Lin, N; Bailey, MC; Fortrom, JW; Buddle, MM; Oort, PJ; Hagen, FS; Roth, GJ; Papayannopoulou, T; Foster, DC (Nature, 1994)