when the spleen cells of c57bl mice immunized against cba-t6t6 mice were injected into the nonirradiated bt6f1 ( c57bl x cba-t6t6 ) hybrid mice , the number of hematopoietic stem cells ( cfu-s of c57bl mouse origin that settled in the spleen of the bt6f1 mice continued to decrease in the first 9 days and then started to increase , with a doubling time of about 36 hr .
C0007634
the
C0018956
hematopoietic stem cells