在生物材料和活性物递送等研究领域，材料科学的发展不断为科研人员提供新的思路和工具。PCL-PVAc-PEG（聚乙烯己内酰胺-聚醋酸乙烯酯-聚乙二醇接 ...

The PCL-DA:PEG-DA hydrogel containing SMA is designed as a contraceptive for application in the human female uterus. It has been shown to be safe in rats and to kill sperm. (Courtesy: B Subramanian) ...