Effect of water extract from traditional Chinese medicines Rehmannia glutinosa, Scrophularia ningpoensis, Asparagus cochinchinensis and Ophiopogon japonicas on contents of CYP450 and activities of CYP3A,CYP2E1 and CYP1A2 in rat Effects of Fertilization on Yield of Asparagus cochinchinensis (Lour.) Merr. Establishment and optimization of ISSR-PCR reaction system in Asparagus cochinchinensis Establishment and optimization of ISSR-PCR reaction system in Asparagus cochinchinensis Rapid propagation system for tissue culture of Asparagus cochinchinensis Rapid propagation system for tissue culture of Asparagus cochinchinensis