French, US viral isolates compared in search for cause of AIDS.
D000163:Acquired Immunodeficiency Syndrome / Q000209:etiology / Q000382:microbiology*; D017977:Deltaretrovirus / Q000302:isolation & purification*; D005260:Female; D005602:France; D006801:Humans; D007391:International Cooperation; D008297:Male; D009316:National Institutes of Health (U.S.); D014481:United States