Category Archives: sperm

Researchers identify new architecture and mechanism in the human sperm.


In male fertility normal sperm cells have an oval-shaped head with a cap-like covering called the acrosome. The acrosome contains enzymes that break down the outer membrane of an egg cell, allowing the sperm to fertilize the egg. One of the causes of male infertility is abnormally shaped sperm. About 60% of the sperm should be normal in size and

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