supported by the National Transgenic Breeding Project (2008ZX08010-004);the National Natural Science Foundation of China (30830080);the National 973 Program of China (G2006CB102105,2009CB941604);the National 863 Program of China (20060110Z1039, 2008AA10Z143)
Type-A spermatogonia first appear at between 3-7 d postnatally in mice and are the only immortalized diploid cells that reproduce in adulthood in these animals. In our current study, we explored the feasibility of pro...