the effect of the thymus cells of the c57bl/6 mice on the colony forming ability of the stem hemopoietic cells of the embryonic liver and bone marrow of young ( 3 months ) and old ( 2 years ) mice was studied their joint transplantation into the mice ( cbaxxc57bl/6 ) f1 .
C0007634
the
C0018956
stem hemopoietic cells