Noradrenergic cell groups refers to collections of neurons in the central nervous system that have been demonstrated by histochemical fluorescence to contain the neurotransmitter norepinephrine (noradrenalin). They are namedNoradrenergic cell group A1 Noradrenergic cell group A2 Noradrenergic cell group A4 Noradrenergic cell group A5 Noradrenergic cell group A6 Noradrenergic cell group A7 Noradrenergic cell group A6sc Noradrenergic cell group Acg