Abnormal objects in sperm

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Try out PMC Labs and tell us what you think. Learn More. This study was performed to evaluate and compare threshold sperm parameters and sperm DNA fragmentation index DFI , and further analyzed whether sperm DFI could be predicted from sperm parameters in men with varicocele. A total of semen samples underwent both semen analysis and sperm DNA fragmentation SDF testing in men with varicocele. Sperm parameters were assessed using the World Health Organization guidelines.
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Weird cells in your semen? Don't panic, you might just have flu

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Assessing human sperm morphology: top models, underdogs or biometrics?

Try out PMC Labs and tell us what you think. Learn More. The assessment of the percentage of spermatozoa having an 'ideal' morphology using so-called strict method is the method recommended in the latest edition of the World Health Organization WHO laboratory manual for semen analysis. This recommendation is a result of the statistical association between 'ideal' sperm morphology and fertility, and of the current general belief that sperm morphology assessment should be used primarily as a fertility tool. The notion of an 'ideal' sperm morphology has persisted despite the very low percentage of such spermatozoa in the semen of fertile men, a subject of intense controversy.
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Assessing human sperm morphology: top models, underdogs or biometrics?

An important part of any breeding soundness exam is an evaluation of sperm morphology. In the most fundamental case, the size and shape of the head, midpiece and tail are examined. Additional information can be gained by evaluating integrity of the acrosome and sperm membranes. Sperm from different species vary in size and shape. Bull and human sperm, for example, have paddle-shaped heads, rodent sperm have hook-shaped heads, and the heads of chicken sperm are spindle-shaped and almost difficult to distinguish from the midpiece.
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By Jessica Hamzelou. The question is why? The latest idea is that infections like flu are to blame, by disrupting sperm production. A high number of white blood cells can indicate some kind of infection, and so men with lots of round cells in their ejaculate may be tested for sexually transmitted infections, says Palermo.
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