since there was no study available on the comparative anatomical neurochemistry of the noradrenaline ( na ) and adrenaline ( a ) containing neurons of the lower brain stem , we studied the distribution of the activities of the three major catecholamines ( ca ) -synthesizing enzymes in coronal sections of the rat medulla oblongata dissected into microcubes .
C0028351
noradrenaline
C0014563
adrenaline