88 THE PHYSIOLOGY OF REPRODUCTION 



stage in monkeys. Wyder, 1 who believed in the partial destruc- 

 tion of the uterine stroma, concluded that this was restored 

 by a hyperplasia of cells in the interglandular tissue of the 

 deeper layers of the mucous membrane, and that the lost epi- 

 thelium was regenerated from the epithelium of the glands. 

 Similar views have been held by other writers. 



Those authorities who hold that the destruction is practi- 

 cally confined to the epithelium believe that the lost cells are 



FIG. 11. Section tbrough the human uterus during the recuperation 

 stage. (From Sellheim.) 



replaced by multiplication of the remaining cells. Mandl, for 

 example, describes various stages of mitotic division in the 

 cells of the epithelium at this stage. But this author is of 

 opinion that the epithelia of the glands assist in the process of 

 renewal. Gebhard describes the epithelium, which had been 

 lifted from its bed by the blood in the hsematomata, as 

 sinking back to its former position, such cells as were lost 

 being regenerated by multiplication of the others. 



The restoration of the mucosa is accompanied by a decrease 



1 Whitridge Williams, loc. tit. 



