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August 9, 1930


JAMA. 1930;95(6):427-428. doi:10.1001/jama.1930.02720060045024

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Hereditary Research on Tuberculous Twins  At the June 18 session of the Berliner Medizinische Gesellschaft, Privatdozent von Verschuer, member of the Kaiser Wilhelm-Institut für Anthropologie und Eugenik in Dahlem, reported the results of a research on tuberculous twins, which he carried out in collaboration with Diehl. For the elucidation of the question of the significance of hereditary influences in the onset and course of tuberculosis, research on twins affords a unique opportunity of observing persons with identically the same hereditary predisposition; namely, in enzygotic twins, and to compare their behavior with biovular twins with like hereditary qualities. Von Verschuer collected seventy-five pairs of tuberculous twins, nineteen of whom were uniovular, thirtyeight biovular of the same sex, and eighteen biovular of different sex. At the time of the examination, tuberculosis was manifest in forty-two pairs of twins—in either one or both of the twins; in nineteen pairs of twins there were

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