title: Blocking activity of non-cytotoxic F (ab')2 tumor cell antibody fragments.
mesh_terms: D000818:Animals; D000906:Antibodies / Q000494:pharmacology*; D002286:Carcinoma, Ehrlich Tumor / Q000276:immunology*; D003165:Complement System Proteins; D003864:Depression, Chemical; D006168:Guinea Pigs; D007074:Immunoglobulin G / Q000037:antagonists & inhibitors*; D010434:Pepsin A
chemical_list: D000906:Antibodies; D007074:Immunoglobulin G; D003165:Complement System Proteins; D010434:Pepsin A