2WANG Gen-lin, CHEN Jie and CHEN Wei-hua( College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095 ,P.R. China ,Key Laboratory of Animal Physiology and Biochemistry of Ministry of Agriculture,Nanjing Agricultural University, Nanjing 210095 ,P.R . China ).The Effect of Intra-cerebral Microinjection with Daidzein on the Plasma LH Level in the Castrated Boars[J].Agricultural Sciences in China,2002,1(5):577-580.