a hybridoma clone secreting a monoclonal antibody , designated ma158.2 , that reacts with an antigen expressed on lymphokine-treated macrophages was produced by fusion of mouse myeloma cells with rat spleen cells immunized against c57bl/6 peritoneal macrophages rendered tumoricidal in vitro by incubation with the lymphokine macrophage-activating factor .
C1327616
secreting
C0007634
cells