[The target cells of serotoninergic innervation in the locus coeruleus]

Method of selective chemical injury of locus ceruleus (LC) has revealed the following serotonergic structures: axonal varicosities, terminals and synapses. Serotonergic structures in LC are numerous. Small neurons with peculiar structures are described which are the targets of serotonergic innervation in LC and are responsible for interrelation with the proper noradrenergic cells and for intermediate interactions.