Schistosomicidal activity of the essential oil of Ageratum conyzoides L. (Asteraceae) against adult Schistosoma mansoni worms - de Melo, N I; Magalhaes, L G; de Carvalho, C E; Wakabayashi, K A; de P Aguiar, G; Ramos, R C; Mantovani, A L; Turatti, I C; Rodrigues, V; Groppo, M; Cunha, W R; Veneziani, R C; Crotti, A E (Molecules, 2011)