“…Its main ingredients are musk (now replaced by artificial musk), calculus bovis (gallstone of the ox), snake's gall, and Tienchi (also known as Sanqi, the root of Panax notoginseng). In our previous study, we have shown that Pien Tze Huang could protect liver from carbon tetrachloride damage, which might lead to the development of hepatoma (Lee et al, 2002). In our present series of investigations on the possible effects of Pien Tze Huang of the central nervous system, we first studied the in vitro anti-cancer activity of Pien Tze Huang on neuroblastoma cells (SH-SY5Y) as compared with normal fibroblasts in culture (NIH-3T3), using a cell survival test, the 3-(4,5-dimethylthiazol-2-yl)-2,2-diphenyltetrazolium bromide (MTT) reduction test (Lü, Li, Yew, Rudd, & Mak, 2008).…”