vitro methodology for the cultivation of erythroid The purpose of In Vitro Aspects of Erythropoiesis is to broaden our understanding of the regulation of stem cells. The second series of papers treats cellular normal and neoplastic hematopoietic cells by means and soluble factors which affect erythroid stem cell of a synthesis of different techniques, divergent no differentiation. Hormonal modulation of in vitro menclature as well as a closer standardization of re erythropoiesis is the theme of the third session fol agents and methods which had heretofore produced lowed by a series of papers...