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Despite the importance of sperm DNA to human reproduction, currently no method exists to assess individual sperm DNA quality prior to clinical selection. Traditionally, skilled clinicians select sperm based on a variety of morphological and motility criteria, but without direct knowledge of their DNA cargo. When selecting sperm cells for ICSI, clinicians rely on visual morphology criteria, such as sperm head size, and head, tail, and mid-piece shape according to the guidelines from the World Health Organization WHO 2after pre-screening for healthy cells i.

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For ages, the conventional wisdom about marijuana and male reproductive health was that one did not benefit the other. Weed was kryptonite for healthy sperm; don't partake in one if you want the other. Scientific studies backed that up.

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StreamHR and LiveTrack focus-tracking were used to analyse a 30 mm square region of copper foil. The colours indicate variations in strain and electronic properties. See how Renishaw's own technologies and products are used during the design, testing and manufacture of our Raman products, and how this helps us to achieve the highest levels of performance and….

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Light micrograph of human ovum egg and sperm. The ovum is much larger than the sperm and is surrounded by protective cumulus cells around the outside surface yellow. The membrane surrounding the ovum brown is the zona pellucida.

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Skip to Main Content. A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. Use of this web site signifies your agreement to the terms and conditions.

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A new way of analysing sperm that tracks the movement of the sperm tail could enable substantial improvements to male fertility testing. The technique measures the speed and action of the sperm flagellum, or tail, which provides vital information for understanding whether sperm in an ejaculate have the potential to reach and fertilise the egg. Professor Smith explains: "We have all heard of 'sperm count', and indeed the tools available to understand sperm - manual counting with a microscope - have not changed much since the s.

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But there is a lot you can do before that, to increase the chance of having a healthy pregnancy and a healthy baby, when the time is right. It can also affect his sex drive libido. Testes need to be a few degrees cooler than the rest of the body to make good quality sperm.

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I also had smear tests and they all came back clear too. She found out after she paid for a full fertility check last January. The average age for going through menopause is about

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The sperm of the male diving beetle is seriously strange: Instead of swimming in the female reproductive tract on their own, individual sperm cells often stick together in pairs, in clusters and even in long chains of hundreds or thousands. Now, a new study finds this weird sperm behavior is driven by the evolution of female diving beetles. When female reproductive tracts evolve into ever more labyrinthine paths, the research finds, male sperm have to evolve to catch up. Diving beetles are tiny but deadly predators, at least if you're a tadpole or baby fish.

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