Figure 1From: Passive administration of purified secretory IgA from human colostrum induces protection against Mycobacterium tuberculosis in a murine model of progressive pulmonary infectionWestern blot of whole cell preparation of M. bovis BCG (1) and whole cell lysate of M. tuberculosis (2) samples, separated by SDS-PAGE 12.5% acrylamide gel. A: Molecular weight markers (Pharmacia), B: human colostrum (1/20); C: purified human secretory IgA (100µg/ml).Back to article page