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Human sperm to human egg

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Scientists may soon be able to create human sperm and eggs using ordinary cells — a boon for those with fertility problems that raises troubling ethical questions. But although millions of babies have now been born by IVF , the technique can offer no help to couples eager to have a child that is genetically theirs but who lack the eggs or sperm to make it: men whose testes produce no sperm, say, or women who have undergone surgery for ovarian cancer. Some opt for donor eggs or sperm, but an alternative may be on the way. Scientists are making steady progress towards creating human eggs and sperm — the so-called gametes that combine in fertilisation — artificially in a petri dish.
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Human eggs prefer some men’s sperm over others, research shows

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Human eggs prefer some men’s sperm over others, research shows

Although it is commonly accepted that fertilisation in humans occurs in the ampulla of the fallopian tube, the peritoneal cavity might represent an alternative fertilisation site. Studies substantiating both fertilisation sites were reviewed and new insights on the fertilisation site in humans are discussed, including their implications for reproductive medicine. Since infertility has a significant psychosocial impact Ombelet et al. Understanding fundamental reproductive principles such as the site for fertilisation, and hence the optimal environment, might contribute to further ART optimisation. It is commonly accepted that fertilisation in humans occurs in the ampulla of the fallopian tube as shown in Fig. Comparable images are widely depicted in study books, scientific publications and on the internet. However, one could question its accuracy since the reference to the original scientific data has become completely lost over time.
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Do human eggs attract spermatozoa?

Human fertilization is the union of a human egg and sperm , occurring in the ampulla of the fallopian tube. Scientists discovered the dynamics of human fertilization in the nineteenth century. The process of fertilization involves a sperm fusing with an ovum.
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