Sperm collect in glasses

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But just like an assembly line, it takes time to go from the start to the end. Sperm cells - which are made in the testicles - need lots of high-octane fuel to whip their tails. In fact, when IVF technicians use tiny, robotically controlled glass straws to insert a single sperm inside an egg, they sometimes beat the sperm with the glass until it stops moving. How else to explain the fact that 90 percent of the sperm in a man's ejaculate are deformed? So here are 15 fascinating facts about sperm, from Dr. Fluid from the prostate contains chemicals that cause semen to liquefy once it's inside the female. And that's despite the fact that the tubes connecting the uterus to the ovaries contain tiny hair cells that beat against the sperm.

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