the t cell line and the clones , upon stimulation with con a in the absence of antigen and irradiated spleen cells , as upon stimulation in the presence of antigen and adherent cells , produce t cell growth factors , b cell replication and maturation factors , and colony-stimulating factors , as tested by restimulation of proliferation of a clone of cytolytic murine t cells , of lipopolysaccharide-activated b cell blasts , and by macrophage/granulocyte colony formation of murine bone marrow cells , respectively .
C0007634
cells
C0007590
cell