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As for the germinal cells, positive PR existed in the cytoplasm during the early ovary development stages (stages I-III), including oogonium and endogenous vitellogenic oocytes, whereas positive PR stained in the nucleus of oocyte cells during stage III to stage V.
It could provide technical support for the basic research on regulation of c-FLIP(L) on the bovine oogonium development, and be important for further research.
Primary oocyte An intermediate cell type in oogenesis arising from an oogonium and remaining in the first meiotic prophase until ovulation.
After fertilization of an oogonium, the resulting oospore was retained on the female thallus and underwent a number of cell divisions to produce a multicellular 'fruit'.