In vivo activity of ursolic and oleanolic acids during the acute phase of Trypanosoma cruzi infection - Ferreira, Daniele da Silva; Esperandim, Viviane Rodrigues; Toldo, Miriam Paula Alonso; Kuehn, Christian Collins; Prado Júnior, José Clóvis do; Cunha, Wilson Roberto; Silva, Márcio Luís Andrade e; Albuquerque, Sérgio de (Experimental Parasitology, 2013)