Scientists Found Sperm’s Power Off Switch

https://www.wired.com/2017/05/scientists-found-sperms-power-switch-way-turn-off/

CONDOMS HAVE COME a long way from the linen and animal bladder sheaths used by the ancient Greeks, Romans, and Egyptians. But the tenets of modern male birth control are no different now than they were then: Keep sperm away from eggs. In the US, some 5.7 million women still rely on the male condom as their primary form of birth control.”

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