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Asthenozoospermia is a common cause of male infertility associated with the reduced motility and/or abnormal morphology of spermatozoa, although its etiology remains incompletely understood. Multiple morphological abnormalities of the sperm flagella (MMAF) is one of the main causes of asthenozoospermia. However, the MMAF‐associated genes identified to date cannot explain all the human MMAF cases....
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