I'm interested in the timing of events during human spermatogenesis, ideally with some references I can build off of. Specifically, I am trying to pin down the number of days for:

  • Spermatogenesis, beginning to end (I have come across 65, 75, and 100).
  • Leptotene stage
  • Zygotene stage
  • Pachytene stage
  • Spermatozoa maturation and histone-protamine transition
  • Time in epididymis (I have come across 12 days)

Again, I want to know the timing of these events in humans, not mice or rats. Specifically, I am trying to pin down the major epigenetic reprogramming stages, with a focus on those occurring in mature males.

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