highly enriched populations of hematopoietic progenitor cells were obtained by isolating lineage negative ( lin- ) , thy-1-positive ( thy-1+ ) fresh bone marrow cells , or by isolating cells from interleukin-3 ( il-3 ) supplemented bone marrow cultures expressing thy-1 antigen with the fluorescent activated cell sorter .
C0018956
hematopoietic progenitor cells
C0007634
cells