3.4.21.95 medicine potential use of snake venom proteases as diagnostic and thrombolytic agents 651434 3.4.21.95 medicine small peptides derived from factor V activator destabilize the beta-amyloid aggregate. Peptide CTNIF and a mixture of six peptides are most potent in converting the aggregates to the monomeric state and thus, preventing cytotoxicity in SH-SY5Y human neuroblastoma cells. Some of the peptides are stable in blood for 24 h 732117