Contributions of northern populations to the understanding of tuberculin sensitivity.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000413:Alaska; D000818:Animals; D002648:Child; D002675:Child, Preschool; D004812:Epidemiologic Methods; D006168:Guinea Pigs; D006801:Humans; D006968:Hypersensitivity, Delayed; D007223:Infant; D008875:Middle Aged; D009169:Mycobacterium tuberculosis; D012882:Skin Tests; D014374:Tuberculin Test