Immunology and cancer.
D000818:Animals; D000941:Antigens; D006528:Carcinoma, Hepatocellular / Q000276:immunology; D004195:Disease Models, Animal; D006168:Guinea Pigs; D007271:Injections, Intradermal; D008113:Liver Neoplasms; D009365:Neoplasm Regression, Spontaneous; D009368:Neoplasm Transplantation; D009369:Neoplasms / Q000139:chemically induced / Q000276:immunology*; D009602:Nitrosamines
D000941:Antigens; D009602:Nitrosamines