| 21. | Prolactin also appears to be important for spermatogenesis.
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| 22. | The GPx4 isoforms mGPx4 and nGPx4 have been implicated in spermatogenesis and male fertility.
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| 23. | The encoded protein is expressed at high levels throughout spermatogenesis and in mature sperm.
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| 24. | Androgens stimulate inhibin production; this protein may also help to locally regulate spermatogenesis.
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| 25. | Inhibin B may be used as a marker of spermatogenesis function and male infertility.
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| 26. | Others established a colony that continued to produce new sperm, a process called spermatogenesis.
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| 27. | The blood-testis barrier is also important in preventing toxic substances from disrupting spermatogenesis.
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| 28. | Excess testosterone evidenced by the beard may indicate mild immunosuppression, which may support spermatogenesis.
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| 29. | Spermatogenesis arrests at this stage until puberty.
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| 30. | ABP is essential to concentrating testosterone in levels high enough to initiate and maintain spermatogenesis.
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