Sperm contains 36.5 mb of data

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Is increased consumption of dairy foods associated with lower semen quality? We found that intake of full-fat dairy was inversely related to sperm motility and morphology. These associations were driven primarily by intake of cheese and were independent of overall dietary patterns.

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In many species, males can make rapid adjustments to ejaculate performance in response to sperm competition risk; however, the mechanisms behind these changes are not understood. Here, we manipulate male social status in an externally fertilising fish, chinook salmon Oncorhynchus tshawytschaand find that in less than 48 hr, males can upregulate sperm velocity when faced with an increased risk of sperm competition. Using a series of in vitro sperm manipulation and competition experiments, we show that rapid changes in sperm velocity are mediated by seminal fluid and the effect of seminal fluid on sperm velocity directly impacts paternity share and therefore reproductive success.

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Please take this quick survey to tell us about what happens after you publish a paper. Basic and Clinical Andrology. DecemberCite as.

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Bergdahl, Niels Henrik I. The effects of zinc, magnesium and calcium in seminal plasma on time-to-pregnancy TTP in healthy couples, on conventional semen parameters and computer-assisted semen analysis CASA parameters were evaluated. The localization of chelatable zinc ions in seminal plasma and spermatozoa were assessed by autometallography AMG.

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Histone to protamine exchange and the hyperacetylation of the remaining histones are hallmarks of spermiogenesis. Acetylation of histone H4 at lysine 12 H4K12ac was observed prior to full decondensation of sperm chromatin after fertilization suggesting an important role for the regulation of gene expression in early embryogenesis. Similarly, DNA methylation may contribute to gene silencing of several developmentally important genes.

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Please take this quick survey to tell us about what happens after you publish a paper. Basic and Clinical Andrology. DecemberCite as.

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In many species, males can make rapid adjustments to ejaculate performance in response to sperm competition risk; however, the mechanisms behind these changes are not understood. Here, we manipulate male social status in an externally fertilising fish, chinook salmon Oncorhynchus tshawytschaand find that in less than 48 hr, males can upregulate sperm velocity when faced with an increased risk of sperm competition. Using a series of in vitro sperm manipulation and competition experiments, we show that rapid changes in sperm velocity are mediated by seminal fluid and the effect of seminal fluid on sperm velocity directly impacts paternity share and therefore reproductive success.

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I stumbled over this vital piece of information when an Austrian Facebook page announced that it would publish its Facebook Page "Unnuetzes Wissen", which translates to "Useless Knowledge" as a printed book and gave a taste of the vital information that can be found on its pages. Or, you will be reminded of the source of the word spam as we use it to describe unsolicited email. However, its likely more than computer nerd will find it interesting that each sperm carries DNA worth about

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