*  Toxins | Free Full-Text | Molecular Characterization of Lys49 and Asp49 Phospholipases A2 from Snake Venom and Their Antiviral...
Crotoxin and phospholipases A2 from Crotalus. durissus terrificus showed antiviral activity against dengue and yellow fever ...
http://www.mdpi.com/2072-6651/5/10/1780/htm