Sperm’s RNA-to-Go Expedites Embryonic Implantation

Sperm bring more than DNA to the party. They also pick up RNA on their way through the epididymis, a duct situated between the testis and the vas deferens. This RNA, it turns out, influences gene regulation in developing embryos, helping them implant in the uterus more efficiently.These findings, which emerged from a pair of studies appearing in the journal Developmental Cell , add to our knowledge about the paternal environment’s effects on fertility and reproduction. To date, most studie