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Iowa State College, Ames, Iowa
ABSTRACT
The mammary tissue of a calf was transplanted so as to sever all of the original nerve and vascular supply between the body and mammary glands. Normal development of the udder occurred during pregnancy with the exception of the right half of the udder which had no sensory nerve supply. A simple experiment on the nerve-free gland has helped to confirm the theory of Ely and Petersen in regard to the functioning of a nerve-endocrine mechanism in the ":letting down" of the milk.
1 Journal Paper No. J-1391 of the Iowa Agricultural Experiment Station, Ames, Iowa. Project No. 814.
2 Present address: North Dakota State College, Fargo, North Dakota.
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