title: Serologic analyses of an immunosuppressive cell-free factor from mastocytoma cells and neutralization by antiserum.
mesh_terms: D000818:Animals; D001202:Ascitic Fluid / Q000276:immunology; D002474:Cell-Free System; D002478:Cells, Cultured; D007106:Immune Sera / Q000276:immunology*; D007116:Immunization, Passive; D007165:Immunosuppression Therapy; D012515:Mast-Cell Sarcoma / Q000276:immunology*; D051379:Mice; D009500:Neutralization Tests; D011817:Rabbits; D012513:Sarcoma, Experimental / Q000276:immunology
chemical_list: D007106:Immune Sera