184 The Ohio Journal of Science [Vol. XVII, No. 6, 



These groups of carcinoma are similar to those already 

 described for thyroid carcinoma in man. This is in agreement 

 with the findings of others concerning the wide zoological 

 distribution of cancer and serves to emphasize the fact that 

 the cancer problem has a wide biologic connection. 



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Laboratories of Pathology and Physiology, 

 Ohio State University. 



