Relationship between enzymatic and pharmacological activities in crotoxin B, the phospholipase 'A IND.2' subunit of crotoxin from Crotalus durissus terrificus snake venom: a chemical modification study - Cecchini, Alessandra Lourenço; Arantes, Eliane Candiani; Giglio, José Roberto; Mancin, Adriana Cristina; Ávila, V R; Soares, Andreimar Martins (Reunião Anual da Sociedade Brasileira de Bioquímica, 2001)