EFFECT OF THYROID ON DIVISION OF PARAMAECIUM 311 



From these experiments it has been suggested that the effect 

 of the thyroid is primarily upon the metabolic activities of the 

 cell, and further, that at the close of the life cycle some element 

 of the protoplasm necessary to digestion is lacking, thus inhibit- 

 ing the effect of the thyroid. 



LITERATURE CITED 



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