Partial purification and immunohistochemical localization of atp diphosphohydrolase from shistosoma mansoni . Immunological cross reactivities with potato apyrase and toxoplasma gondii nucleoside triphosphate hydrolase - Vasconcellos, E; Ferreira, S T; Carvalho, T; Souza, W; Kettlun, A M; Mancilha, A M; Valenzuela, M A; Verjovski-Almeida, Sergio (Journal of Biological Chemistry, 1996)