![This is an image of the myenteric plexus (helps control the digestive tract) with tyrosine hydroxylase labeled green through immunohistochemistry. Tyrosine hydroxylase is the enzyme that converts tyrosine (an amino acid) to L-DOPA, the precursor for dopamine, norepinephrine (aka noradrenaline), and epinephrine (aka adrenaline), so the green is therefore labeling axons from the sympathetic autonomic nervous system (which helps regulate digestion, heartrate, breathing, etc.). The blue is postganglionic neurons. [image Source]](http://27.media.tumblr.com/tumblr_l9vpxmLGa81qb6etto1_500.png)
This is an image of the myenteric plexus (helps control the digestive tract) with tyrosine hydroxylase labeled green through immunohistochemistry. Tyrosine hydroxylase is the enzyme that converts tyrosine (an amino acid) to L-DOPA, the precursor for dopamine, norepinephrine (aka noradrenaline), and epinephrine (aka adrenaline), so the green is therefore labeling axons from the sympathetic autonomic nervous system (which helps regulate digestion, heartrate, breathing, etc.). The blue is postganglionic neurons. [image Source]
