Geographic variations in the composition of myotoxins from Bothrops neuwiedi snake venoms: biochemical characterization and biological activity - Rodrigues, Veridiana Melo; Soares, Andreimar Martins; Mancin, Adriana Cristina; Fontes, Marcos Roberto de Mattos; Homsi-Brandeburgo, Maria Inês; Giglio, Jose Roberto (Comparative Biochemistry and Physiology Part A, 1998)