fluorescence microphotometric measurements of catecholamine uptake in trachealis smooth muscle cells , when tissues were incubated in 200 or 1,200 mumol/l isoprenaline , adrenaline or noradrenaline in the absence and presence of extraneuronal uptake inhibitors ( corticosterone , normetanephrine , phenoxybenzamine ) , showed that the contribution of diffusional entry to the uptake of the amines into the cells fitted with the order of their lipophilicities , viz . isoprenaline much greater than adrenaline greater than noradrenaline .
C0014563
adrenaline
C0028351
noradrenaline