The relationship between ageing and cancer: somatic mutations or break- down of host defence mechanisms.
D000375:Aging; D000818:Animals; D002273:Carcinogens; D003238:Connective Tissue / Q000378:metabolism; D005796:Genes; D006801:Humans; D009154:Mutation; D009369:Neoplasms / Q000209:etiology* / Q000276:immunology
D002273:Carcinogens