ATRA and 9-cis RA also exert their effect on the proliferation of primitive HPCs ( high-proliferative potential colony-forming cells [ HPP-CFCs ] ) and putative hematopoietic stem cells ( HSCs ; assayed in Dexter-type long-term culture ) .
atra and 9-cis ra also exert their effect on the proliferation of primitive hpcs ( high-proliferative potential colony-forming cells [ hpp-cfcs ] ) and putative hematopoietic stem cells ( hscs ; assayed in dexter-type long-term culture ) .
B-other_organic_compound O B-other_organic_compound I-other_organic_compound O O O O O O O O B-cell_type B-cell_type O B-cell_line I-cell_line I-cell_line I-cell_line O B-cell_line O O O B-cell_type I-cell_type I-cell_type I-cell_type O B-cell_type O O O B-other_name I-other_name I-other_name O O