FUNCTIONAL DIFFERENTIATION WITHIN A SINGLE TYPE OF ADRENAL CHROMAFFIN CELL

S Our autoradiographic study in the mouse using tritiated leucine, tyrosine, dopa, dopamine and noradrenaline demonstrated that each chromaffin cell possessed special trapping and concentrating systems for catecholamines in addition to those for amino acids. The systems for catecholamines were, under the control of pituitary ACTH, better developed in the chromaffin cells in the periphery of the adrenal medulla than in those in the center of the adrenal medulla.