Melatonin and zinc treatment: distinctive modulation of cytokine production in chronic experimental Trypanosoma cruzi infection - Brazão, Vânia; Filipin, Marina Del Vecchio; Santello, Fabricia Helena; Caetano, Leony Cristina; Abrahão, Ana Amélia Carraro; Toldo, Míriam Paula Alonso; Prado Júnior, José Clóvis do (Cytokine, 2011)