title: Immunological tolerance and the significance of cell-mediated immunity in virus infections.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D002353:Carrier State; D006168:Guinea Pigs; D000882:Haplorhini; D007108:Immune Tolerance; D008216:Lymphocytic Choriomeningitis / Q000276:immunology*; D008217:Lymphocytic choriomeningitis virus / Q000472:pathogenicity; D051379:Mice; D051381:Rats; D014777:Virus Diseases / Q000276:immunology*