A Simple Method to Identify the Unprocessed Strychnos Seeds used in Herbal Medicinal Products - Han, Quan-Bin; Li, Song-Lin; Qiao, Chun-Feng; Song, Jing-Zheng; Cai, Zong-Wei; Pui-Hay But, Paul; Shaw, Pang-Chui; Xu, Hong-Xi (Planta Medica, 2008)