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Sperm cells contribute approximately half of the nuclear genetic information to the diploid offspring excluding, in most cases, mitochondrial DNA. Sperm quality in normospermic men and in men with teratozoospermia: How to Make the Most of your Doctor. These are strict criteria. The head must have a smooth oval configuration with a well-defined acrosome comprising approx. Contemporary concepts in the evaluation and management of male infertility.
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Male Factor Infertility, Causes, Symptoms

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Needless to say, this would not be possible without the existence of the sperm cells. The whip-like tail flagellum of the sperm is studded with ion channels formed by proteins called CatSper. You will also learn how the sperm cell is linked to reproduction and why it is so important for the survival of a species. Spermatogenesis is the process whereby male reproductive cells are formed, from the immature ones, spermatogonia, until the mature ones, spermatozoa.
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Here is a wiki link for pejorative. This is the linguistics term used for such derogatory terms covered in this video. It briefly describes the process by which words may become derogatory or re-appropriated into non-pejorative usage with a few examples. Very fun stuff if you are a linguistics buff!
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