Acidic Polysaccharide from Panax ginseng, Ginsan, Induces Th1 Cell and Macrophage Cytokines and Generates LAK Cells in Synergy with rIL-2 - Kim, Ki-Hwan; Lee, Yun-Sil; Jung, In-Sung; Park, Shin-Young; Chung, Hee-Yong; Lee, Ihn-Rhan; Yun, Yeon-Sook (Planta Medica, 1998)