Abstract
Summary
The inhibition of the tryptic hydrolysis of benzoyl-dl-arginine-β-naphthylamide by homogenates of human and bovine cerebrum, cerebrum gray matter, cerebrum white matter, cerebellum, corpus callosum, medulla, thalamus, midbrain, and pons is reported. There is no significant difference between inhibitory levels of primarily gray areas and primarily white areas of brain. Dialyzed, lyophilized myelin does not inhibit tryptic activity. The reaction of brain homogenates with trypsin is rapid.
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