3.4.24.74 BFT-1 and BFT-2 are partially cleaved by trypsin, 1:2 w/w, after 24 h. The pattern of tryptic peptides from BFT-1 and BFT-2 is identical 651483 3.4.24.74 Stable to freeze-drying 31497 3.4.24.74 stable to treatment with trypsin, chymotrypsin, and Dispase I 31497