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1 From Department of Pharmacology, New York University College of Medicine
1. The acetylcholine present in the central nervous system and in the peripheral nerves is completely or almost completely hydrolyzed during grinding and subsequent incubation of the tissues.
2. Subcutaneous injection of eserine even in large doses does not affect this process in the case of the central nervous system.
3. In contrast to this the acetylcholine of peripheral nerves is completely protected from hydrolysis by subcutaneous injection of eserine.
4. Propagation of impulses in such nerves is present.
Submitted on January 10, 1944