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An infertility disorder characterized by azoospermia due to spermatogenic arrest during meiosis. Meiotic arrest is characterized by germ cells that enter meiosis and undergo the first chromosomal reduction from 4n to 2n, but that are then unable to proceed further. This results in tubules containing spermatocytes as the latest developmental stage of germ cells. Meiotically arrested spermatocytes accumulate in the tubules and degenerate. Both autosomal recessive and autosomal dominant inheritance have been reported.




Oligochiasmic infertility
Oligosynaptic infertility


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