PT - JOURNAL ARTICLE AU - Bogdanski, Donald F. AU - Pletscher, Alfred AU - Brodie, Bernard B. AU - Udenfriend, Sidney TI - IDENTIFICATION AND ASSAY OF SEROTONIN IN BRAIN DP - 1956 May 01 TA - Journal of Pharmacology and Experimental Therapeutics PG - 82--88 VI - 117 IP - 1 4099 - http://jpet.aspetjournals.org/content/117/1/82.short 4100 - http://jpet.aspetjournals.org/content/117/1/82.full SO - J Pharmacol Exp Ther1956 May 01; 117 AB - 1. A fluorometric method for the determination of serotonin (5-hydroxytryp-tamine) in brain is described. The procedure involves the use of a spectrophoto-fluorometer which can activate and measure emitted fluorescence continuously from 250 to 650 mµ. Serotonin is activated maximally at 295 mµ and emits fluorescent light which shows a maximum at 550 mµ. 2. With this method serotonin has been shown to be a normal constituent of brain. 3. The fluorescent procedure may be applied to the measurement of serotonin in other tissues.