Speck, N.A.

aorta hematopoietic embryo region mouse cfu-s 11 tissue ®nitive activity dorsal aorta development ®nitive hscs cfu-s 11 activity number agm region hematopoietic cells blood dzierzak adult mouse embryo vitelline culture hsc activity umbilical arteries umbilical dorsal gonad recipient artery explant medvinsky bruijn increase progenitors figure result aorta region vessel hematopoiesi umbilical vessels mesenchyme system repopulation subdissected presence ®nitive hematopoietic cells organ explant culture study donor cluster transplantation mesonephro lineage hematopoietic tissues e 11 ugr table expression precursor e 12 aorta multilineage hematopoietic repopulation month ® rst ®nitive hematopoiesis frequency table i marker cbfa 2 urogenital multilineage marrow source e 12. 1 e.e bone marrow yolk sac level analysis mesonephroi contribution panel