OVARY AND THE ANTERIOR PITUITARY BODY i6i 



The result of injection of suspensions of the anterior pituitary 

 tissue is therefore essentially the rapid maturation of Graafian 

 follicles in the ovar}^ with the coincident appearance of oestrous 



^-tSA 



Fig. 6o. — Effect of anterior Pituitary Implants on Ovary 



OF Immature Rat. 

 (a) Control litter mate; (b) Mature follicles and corpora lutea found 

 after four daily implantations of anterior lobe of rabbit. (From Smith 

 and Engle.) 



changes in the accessory organs. The production of oestrin by the 

 stimulated immature ovary in such experiments has been attri- 

 buted to the hypertrophy caused in the Graafian follicles, but the 



P.S.O. L 



