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CYCLIC CHANGES IN THE OVARIES AND UTERUS OF THE SOW, ETC. 



the pig, nor do they agree in all particulars among themselves, though most of them 

 describe a wave of cell-division in the epithelium and considerable growth of the 

 glands and stroma in the days following ovulation. The discrepancies of detail 

 are no doubt partly due to the fact that each of the animals used for these studies 

 is a law unto itself, both as to anatomy of the reproductive organs and as to outward 

 expression of the cycle. Preparation of the pig's uterus for the diffuse non-deciduate 

 placentation of this species may well involve changes somewhat different from 

 preparation for the elaborate implantation of the guinea-pig and man. Clearly, 

 much remains to be done before satisfactory generalizations can be established. 



Tabular synopsis of the ovarian and uterine cycle. 



