title: Distribution of pigment on the arms of Negroes.
mesh_terms: D000293:Adolescent; D000328:Adult; D001741:Black or African American; D000368:Aged; D001132:Arm; D002648:Child; D005260:Female; D049673:History, 20th Century; D006801:Humans; D007388:Internal Medicine / Q000266:history; D008297:Male; D008875:Middle Aged; D010859:Pigmentation Disorders / Q000266:history*; D012880:Skin Pigmentation; D014481:United States