抄録
Histochemical investigations were carried out on the distribution of choline esterase activity in medulla oblongata of normal and thiamine deficient rats. Choline esterase in nucleus originis nervi hypoglossi and nucleus originis nervi facialis of normal rats was remarkably active while in nucleus ambigius, nucleus rhaphes magnus, nucleus olivae and formatio reticularis was moderately active. In thiamine deficient rats, choline esterase activity was decreased in nucleus originis nervi hypoglossi, nucleus originis nervi facialis and formatis reticularis.
