How can viral variation be overcome?
Cohen
J
J
D016915:AIDS Vaccines; D000163:Acquired Immunodeficiency Syndrome / Q000382:microbiology; D014644:Genetic Variation; D015726:Giant Cells; D006678:HIV / Q000145:classification / Q000235:genetics* / Q000276:immunology; D006801:Humans; D010641:Phenotype
D016915:AIDS Vaccines