Our long standing understanding for mammalian ovary is that it has fixed number of germ cells and duty of the ovary is to ovulate high quality ovum for successful fertilization and early embryonic development. However, growing studies suggest that the oocytes can be generated from Oocyte like stem cell/neo-oogenesis/adult oogenesis and fertilized in vitro. Therefore, it is important tom know whether oocytes generated from these sources are as good as the follicular oocytes collected from mammals under natural conditions. Kindly give your opinion on the genomics, proteomics and metabolomics aspects of ocytes generated from Oocyte like stem cell/neo-oogenesis/adult oogenesis.