OVARY AS ORGAN OF INTERNAL SECRETION 77 



this leads to the production of lutein tissue, and to the 

 appearance of large amounts of interstitial tissue in species 





^ 





Fig. 40. — Ovary of Rat after Transplantation to the 

 Peritoneum, showing Corpora Lutea and small Follicle. 



(From Marshall and Jolly.) 



where it originates from atretic follicles. Cystic follicles are 

 also common in the ovarian graft. 



Ovarian tissue grafted into the male animal differs from that 

 grafted into the female, in that all follicles appear to become 



