whether such sensitivity interacts significantly with tuberculosis or with leprosy is not known.a study of reactions to tuberculin ( ppd-s ) and to a sensitin prepared from m. intracellulare ( ppd-b ) was carried out in villages close to an area in which a clinical trial of the preventive effect of bcg against leprosy was being conducted .
C0041296
tuberculosis
C0034131
ppd-s