Acid and alkaline phosphatase activities of a fraction isolated from Parawixia bistriata spider venom - Rodrigues, Marcelo Cairrão Araujo; Guimarães, Luis Henrique Souza; Liberato, José Luis; Polizeli, Maria de Lourdes Teixeira de Moraes; Santos, Wagner Ferreira dos (Toxicon, 2006)