. "\"A first transient wave of blood cell production that, in vertebrates, gives rise to erythrocytes (red blood cells) and myeloid cells.\" [GOC:bf, GOC:dph, PMID:15378083, PMID:15617691]" . . "primitive hemopoiesis" . "primitive haematopoiesis" . "primitive haemopoiesis" . . "primitive hematopoiesis" .