Anticancer activities of curcumin on human hepatocarcinoma cell line Sk-hep-1 The effect of quinestrol on reproductive system of male Yangtze vole, Microtus fortis Effects of the contraceptive compound (EP-1) on reproduction of dominant desert rodents in Inner Mongolia Anti-fertility effect of EP-1 contraceptive compound on male Mongolia gerbils Meriones unguiculatus Chemical constituents of Gleditsiae Spina and their antitumor activity