Using a device that mimics narrow spots in the female reproductive tract, researchers studied how sperm navigate the obstacle. Faced with having to go against a stronger current at that spot, more agile sperm swam in a butterfly-shaped pattern, increasing their chances of making it through.
Read more: https://www.sciencenews.org/article/s...
Video: M. Zaferani, G.D. Palermo and A. Abbaspourrad/Sci. Adv. 2019
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