A human sperm can move up to 70 for each cent faster if it has a lazy tail, a locating that could pave the way for new fertility diagnostic tests.
Sperm cells use their tails to swim, although some do not use the whole tail – leaving a piece at the stop inactive. This part only constitutes about 3 to five for every cent of a ordinary sperm tail – which is generally involving 50 and 55 micrometres prolonged – and doesn’t actively bend like the relaxation of …
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