title: Letter: Effect of viruses on lymphocyte reactivity.
mesh_terms: D000818:Animals; D000941:Antigens; D004586:Electrophoresis; D006168:Guinea Pigs; D006801:Humans; D006920:Hygiene; D007251:Influenza, Human / Q000276:immunology; D008214:Lymphocytes / Q000276:immunology*; D008264:Macrophages / Q000276:immunology; D014777:Virus Diseases / Q000276:immunology*
chemical_list: D000941:Antigens