Difco Antigens and Antiserum
DIFCO ANTIGENS - DIFCO ANTISERUM
Difco antigens and Difco antiserum. Difco E Coli, Difco Freunds, Difco Mycobacterium Tuberculosis, Difco Salmonella, Difco Shigella and Difco Vibrio

DIFCO ANTIGENS - DIFCO ANTISERUM
Difco antigens and Difco antiserum. Difco E Coli, Difco Freunds, Difco Mycobacterium Tuberculosis, Difco Salmonella, Difco Shigella and Difco Vibrio