Bovine purified protein derivative (bPPD) and avian purified protein derivative (aPPD) arewidely used forbovine tuberculosis diagnosis. However, little is known about their qualitative and quantitative characteristics, which makes their standardisation difficult. In addition, bPPDcan give false-posi...
ORGANISM(S): Mycobacterium avium subsp. avium ATCC 25291 Mycobacterium bovis AN5