Neutralization of pharmacological and toxic activities of bothrops snake venoms by Schizolobium parahyba (Fabaceae) aqueous extract and its fractions - Vale, Luis Henrique F.; Mendes, Mirian M.; Hamaguchi, Amélia; Soares, Andreimar Martins; Rodrigues, Veridiana M.; Homsi-Brandeburgo, Maria Inês (Basic & Clinical Pharmacology & Toxicology, 2008)