Kvetnansky, R., Weise, V. K., Kopin, I. 1970. Elevation of adrenal Tyrosine hydroxylase and phenylethanolamine-N-methyl transferase by repeated immobilization of rats. Endocrinology 87, 744-749.

Immobilization result in a neuronally dependent elevation of tyrosine hydroxilase in the adrenal medulla.

Year
1970