Fig. 1From: Used protocols for isolation and propagation of ovarian stem cells, different cells with different traitsThe OSCs discovery milestone. The old opinion about oogenesis was appeared from 1870 and this long standing opinion was maintained for many years until 2004 that Johnson et al. challenged it and after that many research groups reports their investigations on OSCs. In 2013, the final important research on isolation and propagation of OSCs was published by Prof. Tilly’s groupBack to article page