increased concentrations were found in regions which are known to participate in the central regulation of blood pressure ( nucleus of the solitary tract , a1c1 catecholaminergic cell groups in the ventrolateral medulla oblongata , locus coeruleus ) and in the periaqueductal central gray matter , the hippocampus and the cingulate cortex .
C0175518
nucleus of the solitary tract
C0025148
medulla oblongata