* Measurement of PGK2 and ACRV1 levels in the semen of infertile males undergoing testicular sperm extraction (TESE). * Correlate seminal levels of PGK2 and ACRV1 with sperm retrieval results and histopathology analysis of testicular biopsy samples.
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Know more about the functional role of PGK2 and ACRV1 in the process of spermatogenesis.
Timeframe: 2 years
Detect if PGK2 and/or AVRV1 level can used as predictor for spermatogenesis in infertile men with non-obstructive azoospermia undergoing Testicular Sperm Extraction.
Timeframe: 2 years