Effects of minor ginsenosides, ginsenoside metabolites, and ginsenoside epimers on the growth of Caenorhabditis elegans - Lee, J H; Ahn, J Y; Shin, T J; Choi, S H; Lee, B H; Hwang, S H; Kang, J; Kim, H J; Park, C W; Nah, S Y (J Ginseng Res, 2011)