VII. MTAMIX A DKFICIKA'CV I.\ ANIMALS 



109 



:2v ■^ '^w--' 



Fig. 27. Vitamin A deficiency in the guinea pig. Uterus. Total keratinizing meta- 

 plasia of the epithelium lining the cavity, and of the glands. 



«..•> i' 







% 





Fk;. -'^. \ ii.iinin A ilrliiniirN 111 lilt' liiini.Mi infant. .\ duct in the pancreas lined 

 with stratified keratinizing cijit lidiuni. 



