modulations in surface antigen expression during marrow regeneration in vivo , and proliferation in vitro in response to haemopoietic growth factors , were studied using a panel of monoclonal antibodies recognizing antigenic determinants expressed by primitive multipotential progenitor cells ( thy-1 , qa-m7 ) , or lineage antigens restricted to committed progenitors and differentiated cells of the neutrophil/macrophage ( 7/4 ) and b lymphocyte ( b220 ) lineages .
C0003316
antigenic
C0003320
antigens