the findings indicate the presence of these 3 catecholamines in rat sif cell clusters in a varying amount : in probes , each consisting of 5 cell clusters , the content of norepinephrine averaged approximately 7.3 pmol , of epinephrine below 1 pmol , and of dopamine from below 1 pmol to 14.6 pmol .
C0007412
catecholamines
C0013030
dopamine