mycobacteria antigens derived from whole cells and cell walls of m. tuberculosis and m. bovis ( bcg ) and soluble purified protein derivative ( ppd ) prepared from m. tuberculosis were used in solid phase radioimmunoassays to measure the amount of reactive igg antibody in serums from 54 patients with active ( culture-positive ) tuberculosis ( group i ) , 6 patients with inactive ( culture-negative ) tuberculosis ( group ii ) , 15 healthy subjects who were skin test positive to ppd ( group iii ) , and 30 healthy persons who were ppd skin test negative ( group iv ) .
C0034131
purified protein derivative
C0041296
tuberculosis