Stimulation of Cytokine Production in Human Peripheral Blood Mononuclear Cells by an Aqueous Chlorella Extract - Ewart, H Stephen; Bloch, Olga; Girouard, Gabrielle S; Kralovec, Jaroslav; Barrow, Colin J; Ben-Yehudah, Gilad; Suárez, Erick Reyes; Rapoport, Micha J (Planta Medica, 2007)