title: Ontogeny of hematopoietic cells in Rana pipiens: precursor cell migration during embryogenesis.
mesh_terms: D000818:Animals; D002465:Cell Movement; D004625:Embryo, Nonmammalian / Q000502:physiology*; D005260:Female; D006412:Hematopoietic Stem Cells / Q000502:physiology*; D007700:Kinetics; D007814:Larva / Q000502:physiology; D009928:Organ Specificity; D011894:Rana pipiens