Angiotensin affects the growth of many cells types and there have been
suggestions that it could influence cells which respond to erythropoi
etin. During first trimester, human fetal haematopoietic cells are exq
uisitely responsive to erythropoietin and we have assessed the potenti
al for angiotensin to also influence the growth of these types in a st
andard culture system. The data obtained from these studies indicated
that angiotensin does not influence fetal haematopoiesis over a range
of concentrations.