A–H, Wholemount Pecam1 immunostainings of E11.5 hearts show the newly formed coronary plexuses in the ventricles. Note greatly increased formation of these primitive vessels by the R1 CKO hearts (B, D
Normal erythropoiesis requires a critical balance between proapoptotic and antipaoptotic pathways. Bcl-xl, an antiapoptotic protein is induced at end-stages of differentiation of erythroid precursors
