THE PITUITARY BODY 



hypertrophy (as in normal rats), but by further atrophy 

 (Smith, 1930). 



Fig. 21. — The uteri of the rats shown in Figure 13. Left, of the hypophysecto- 

 mized rat; weight, 34.2 mg. Right, of the normal rat; weight, 283.0 mg. 



Fig. 22. — Photomicrographs of the uteri shown in Figure 21. X22. Left, uterus 

 of the normal rat. Right, uterus of the hypophysectomized rat. 



Oestrous cycles and probably ovulation do not occur in the 

 hypophysectomized rat. Both the uterus and the vagina un- 

 dergo a marked atrophy (Figs. 21-23). The characteristic 



[54I 



