Comparative Studies on Pharmacological and Toxic Actions of Raw Fructus Psoraleae and Its Salt baked and Improved Salt baked Products Effects of traditional Chinese medicine Fructus psoraleae on differentiation of  mouse osteoblastic MC3T3-E1 cell in vitro Exploration of Processing Principles for Fructus Psoralea Determination of Psoralen and Isopsoralen in Tincture of Fructus Psoraleae by HPLC