Establishment of mathematical model for four natures of Chinese materia medica in pathological state and verification on Xiaochaihu Decoction Analysis on chemical constituents in Xiaochaihu metabolites in depressed rats Decoction and their in vivo Effects of Three Chinese Medical Prescriptions on Alkaline Reflux Gastritis in Rats Effect of Xiaochaihu decoction and different herbal formulation of component on inhibiting H22 liver cancer in mice and enhancing immune function Analysis on chemical constituents in Xiaochaihu Decoction and their in vivo metabolites in depressed rats