title: Immune suppression of tumor-bearing hosts by cultured lymphocyte supernates.
mesh_terms: D000368:Aged; D000818:Animals; D006801:Humans; D007075:Immunoglobulin M / Q000096:biosynthesis* / Q000276:immunology; D008214:Lymphocytes / Q000276:immunology*; D051379:Mice; D008815:Mice, Inbred Strains; D008875:Middle Aged; D009369:Neoplasms / Q000276:immunology*
chemical_list: D007075:Immunoglobulin M