Immune surveillance and tumor defense mechanisms.
D000367:Age Factors; D000818:Animals; D000951:Antigens, Neoplasm; D006649:Histocompatibility Antigens; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000150:complications; D007694:Killer Cells, Natural; D051379:Mice; D008819:Mice, Nude; D009369:Neoplasms / Q000150:complications / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology
D000951:Antigens, Neoplasm; D006649:Histocompatibility Antigens