in the direct test , hypersensitivity to homologous antigen was most marked with m. tuberculosis , m. kansasii , and m. avium ( migration indices [ mi ] = 0.42 to 0.50 ) , but was significantly weaker with organisms possessing a lower degree of pathogenic activity ( mi for m. fortuitum and n. asteroides = 0.70 and 0.72 , respectively ) .
C0029235
organisms
C0450254
pathogenic