[Aging and virus infections].
D000368:Aged; D000375:Aging / Q000276:immunology*; D001402:B-Lymphocytes / Q000276:immunology; D006801:Humans; D007239:Infections / Q000209:etiology / Q000276:immunology*; D008213:Lymphocyte Activation; D009857:Oncogenes; D014775:Virus Activation; D014777:Virus Diseases / Q000276:immunology*