Reseach progress on lanostane-type triterpenoids in plants of Schisandraceae and their pharmacological activities Ingestion Coefficient and Antifertility Action of Neem Oil Granules for Rodents‘ Ambisexual Sterility Effect of levonorgestrel-quinestrol on fertility of female Mongolia gerbils, Meriones unguiculats The Control Effect of Compound Sterilant on Population of Plateau Pika Antifertility Effects of Ilex cornura Lindl.