Dear Pramod Kumar Yadav many thanks for sharing this very interesting technical question with the RG community. Please note that the first article suggested by Shin Murakami is freely available as public full text on RG:
Germ cell depletion from mammalian ovary: Possible involvement of apoptosis and autophagy
Article Germ cell depletion from mammalian ovary: Possible involveme...
Also please have a look at the following potentially useful article:
Fate of the germ cells in mammalian ovary: A review
Article Fate of the germ cells in mammalian ovary: A review
This review article has also been posted by the authors as public full text on RG, so that you can freely download it as pdf file.
Good luck with your work and please stay safe and healthy!