精子冷冻保存 Small-volume vitrification for human spermatozoa in the absence of cryoprotectants by using Cryotop 作者 生殖保护 发布于 2017年12月8日 3200 阅读 Cryotop is a carrier that has been used successfully in the cryopreservation of human spermatozoa. Here, we explored a novel method to vitrify human spermatozoa without cryoprotective agents (CPAs) using Cryotop. Spermat 阅读全文