All Kai Onaklvx Graft; 





Fig. 2. Autooraft of long-stored ovaries to old ovariectomized females, 

 showing mature follicle and normal egg. Ovaries removed from young rat of 

 approximately 50 g. body weight, stored at —190° C. in 15 per cent glycerol- 

 saline for 747 days and then autografted back to donor. Vaginal cornification 

 occurred 14 days later and four cycles were observed before the graft was re- 

 moved 50 days after transplantation. (I^FO 80.) 



m^' 



Fig. 3. Homograft of long-stored ovaries to young ovariectomized female, 

 showing corpus luteum and follicles. Ovaries removed from yoimg rat, stored 

 at — 190° C. in 15 per cent glycerol-saline for 720 days and then homografted 

 to newly ovariectomized young female. Vaginal cornification reappeared 20 

 days later and two cycles were observed before the graft was removed 32 days 

 after transplantation. (LFO 220.) 



[To face page 166 



