| 摘要 |
The present invention relates to male infertility, and in particular to assays for predicting fertility in animals including human and bovines. In some embodiments, semen samples are evaluated by measuring the amount of ubiquitin in the sample, and in particular by measuring the extent of ubiquitination spermatozoa. Increased levels of ubiquitination in a sample are correlated with lower fertility. Ubiquitination may be assayed by several methods, including immunocytochemical measurement, ELISA, and flow cytometry.
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