CA, cortical alveoli; AF, atretic follicle; BM, basement membrane; F, follicle cell; FG, full-grown oocyte; LO, leptotene
oocytes; N, nucleus; NU, perinuclear nucleoli; OF, ovarian follicle; OG, oogonium; OL, ovarian lumen; PF, prefollicle cells; PG, primary growth oocyte; PO, pachytene oocyte; SG, secondary growth oocyte; Y, yolk globule; ZP, zona pellucida.
Primary spermatocytes, stained with the anti-SCP3 antibody, were selected to evaluate the respective percentages of leptotene
, zygotene, pachytene and diplotene stages.
The preleptotene spermatocytes enter prophase I of meiosis, transform into leptotene
, zygotene, pachytene and diplotene cells, which then quickly finish meiosis I forming secondary spermatocytes.
Early prophasic Leptotene
, Oogonia enter into meiosis, stage (CN) zygotene, giving rise to oocytes.
2003) current study study) Spermatogonia: Cell size: Cell size: 8- Cell size: spherical or 5-7 [micro]m 10 [micro]m 8-10 [micro]m oval shaped, Nucleus: round nucleus 6-7 [micro]m containing euchromatin, prominent nucleolus Primary Cell size: Cell size: Cell size: leptotene
3-5 [micro]m 10-12 [micro]m 12-15 [micro]m spermatocytes: round shaped Nucleus: Nucleus: with large, 2.
46) FSH is responsible for the development and differentiation of spermatogonia through different stages namely spermatogonia, preleptotene, leptotene
, early pachytene, late pachytene, and secondary spermatocytes after the attainment of puberty.
This latter cell gives rise to the primary spermatocyte, which quickly undergoes its first meiotic division and passes through 4 prophase stages, leptotene
, zygotene, pachytene, and diplotene, before undergoing meiotic metaphase.