Partial chemical structure and immunomodulating activities of RGAP (Red Ginseng acidic Polysaccharide) from Korean red ginseng (Panax ginseng C. A. Meyer) - Park, JD; Shin, HJ; Kwak, YS; Wee, JJ; Song, YB; Kyung, JS; Kiyohara, H; Yamada, H (Planta Medica, 2006)