Noradrenergic cells in medulla; Norepinephric cells in medulla A1, A2

Noradrenergic cells in medulla are divided in two group : 

 - Noradrenergic cell group A1 is a group of cells in the vicinity of the lateral reticular nucleus of the medullary reticular formation that label for norepinephrine in primates and rodents. They are found in the ventrolateral medulla in conjunction with the adrenergic cell group C1.

 - Noradrenergic cell group A2 is a group of cells in the vicinity of the dorsal motor nucleus of the vagus nerve in the medulla that label for norepinephrine in primates and rodents.