title: Enhancement of immunoglobulin secretion by the lymphokine-like activity of a Mycoplasma arginini strain.
abstract: B lymphocytes, preactivated by lipopolysaccharide (LPS), could be triggered to growth by a strain of Mycoplasma arginini, while the level of immunoglobulin (Ig) secretion, quantitated as the number of plaque-forming cells (PFC), was low. The PFC response could be increased by the addition of conditioned media (CM) from lectin-activated spleen cells or T cell tumour EL-4 to the culture of preactivated B cells. CM did not by itself induce a significant amount of PFC in the cultures of LPS-preactivated B cells. The maturation enhancing activity was distinct from IL-2 and B cell growth factor as judged by gel exclusion chromatography.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D001402:B-Lymphocytes / Q000276:immunology*; D002460:Cell Line; D002478:Cells, Cultured; D003470:Culture Media; D007136:Immunoglobulins / Q000378:metabolism; D008070:Lipopolysaccharides / Q000494:pharmacology; D008213:Lymphocyte Activation; D008222:Lymphokines / Q000494:pharmacology; D051379:Mice; D009174:Mycoplasma / Q000276:immunology*
chemical_list: D003470:Culture Media; D007136:Immunoglobulins; D008070:Lipopolysaccharides; D008222:Lymphokines