Neuro-histochemical study of the adrenal gland of Rattus rattus rufescens (Indian black rat) as revealed by cholinesterase technique.

The present investigation was undertaken to study the innervation and acetylcholinesterase (AChE) distribution in the adrenal gland of Rattus rattus rufescens (Indian black rat) by cholinesterase technique. The percentage of myelinated nerves in the cortical zone (cortex) and medulla zone was high. AChE-positive and multipolar ganglia on the outer medulla region, and the ganglia and nerve cells, arranged in chain-like fashion in the chromaffin tissue, were recorded. AChE activity was marked in the cortical zone (in the form of spots) and in the medulla zone (in the form of white and black grains).