Stages of oocyte development in G. rufa
(a) Oogonium x1500 PAS (periodic acid-Schiff stain).(b) Chromatin nucleolus stage x1500 PAS. (c) Peri-nucleolar stage x600 H&E (Harris' hematoxylin eosin)
(d) Cortical alveolar stage x300 PAS. (e) Vitellogenic stage x150 PAS
(f) Vitellin membrane x1500 H&E. (g) Maturation stage x150PAS.
(h) Atretic oocyte x600 H&E.
Abbreviations: O, Oogonium; PN, Primer Nucleolus; CR, Chromatin; N, Nucleus;
YN, Yolk nucleus; CA, Cortical alveoles; GV, Germinal vessicle; YV, Yolk vessicles;
TL, Teca layer; GL, Granulosa layer; ZR, Zona radiata; MO, Mature oocyte
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