In vitro schistosomicidal evaluation of lignans from Piper cubeba against Schistosoma mansoni adult worms - Costa, ES; Souza, JM; Símaro, GV; Magalhães, LG; Bastos, JK; Laurentiz, RS; Pauletti, PM; Cunha, WR; Januário, AH; Silva, MLA (Planta Medica, 2014)