Evaluation of immunomodulatory and anti-inflammatory effects and phytochemical screening of Alternanthera tenella Colla (Amaranthaceae) aqueous extracts - Biella, Carla de Agostino; Salvador, Marcos José; Dias, Diones Aparecida; Dias-Baruffi, Marcelo; Crott, Luciana Simon Pereira (Memórias do Instituto Oswaldo Cruz, 2008)