One of the small oval masses of cells found in the walls of the ganglia of the sympathetic nervous system, near the spinal cord. They are chromaffin cells, like those of the adrenal gland, and may secrete epinephrine.
One of the small ovoid collections of cells occurring in the walls of the ganglia of the sympathetic nervous system adjacent to the spinal cord. They are chromaffin cells and sometimes secrete adrenaline.
A group of pheochromocytes located adjacent to specific arteries.