The concentration of catecholamines in the brain of the domestic fowl (Gallus domesticus)

Abstract

1 . The concentrations of adrenaline and noradrenaline in the brains of chickens (Gallus domesticus) have been determined using two different methods of fluorimetric analysis. 2 . The concentrations of adrenaline, noradrenaline and also dopamine were found to increase with age, as did the relative amount of adrenaline present in the chicken brain. 3 . It was observed that the differential assay of adrenaline by the trihydroxyindole method often underestimated the amount of adrenaline present.