a method is described for the preparation of ( 1 ) the heavy population of bovine adrenal chromaffin granules ( sh ( average sedimentation coefficient ) = 12 400 s in 0.25 m sucrose ) essentially free from contamination with mitochondria and other organelles , and ( 2 ) a subpopulation of this heavy population which is highly enriched in noradrenalin ( greater than or approximately 95 % of the total catecholamine is noradrenalin ) .
C0007412
catecholamine
C0028351
noradrenalin