Expression of Ia-like and HLA-A,B antigens on human multipotential hematopoietic progenitor cells

Abstract

Human multipotential hematopoietic progenitor cells can be assayed by their ability to form colonies of mixed cell lineages in vitro. These cells display la-like antigens and HLA-A,B,C antigens as evidenced by inhibition of colony formation by specific monoclonal antibodies and complement.