title: Transitions of fetal hemopoietic tissue.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D004912:Erythrocytes / Q000166:cytology; D005260:Female; D005333:Fetus / Q000502:physiology*; D005865:Gestational Age; D006410:Hematopoiesis; D006801:Humans; D011247:Pregnancy; D051381:Rats