On the dependence of protein-free nitrogen-body exchange on the sympathetic and parasympathetic systems. Eiger, Rubinstein (Warsz. Czasop. Lek., 1927, no. 12)

To prove the influence of the autonomic system on the metabolism of protein-free nitrogen bodies, the authors performed a series of experiments on dogs and rabbits, using a chemical micromethod they examined "protein-free nitrogen" in blood or serum taken from v. hepatica before and after transection of the corresponding nerves of the autonomic system, as well as before and after excitation of the same nerves.