LONG and MARK- Maturation of Egg of Mouse 



Plate 4 



V 



.- 



m 



iVi'iRW***' 



A* 





/7, 



4 





% 



/s 



# 



/7i 



A 



% 



X 



? 



VI 





20 





fe*v 



19 b 



83 . 



