RT Journal Article SR Electronic T1 Extraneuronal catecholamine as an index for sympathetic activity: a scanning microfluorimetric study on the iris of the rat. JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 265 OP 270 VO 211 IS 2 A1 J Schipper A1 F J Tilders A1 J S Ploem YR 1979 UL http://jpet.aspetjournals.org/content/211/2/265.abstract AB