A vaccine against a sperm-related protein made male monkeys temporarily infertile, an approach that might lead to a contraceptive for men, researchers report.

• 研究人员报道说，一种抵精子蛋白质抗体疫苗可以使雄性猴子暂时丧失生育能力，这项研究可能发展成为一种男性避孕用品。