✦ LIBER ✦

Preparation of 125I-labeled secretin of high specific radioactivity

✍ Scribed by Hsin-Hsiung Tai; Brian Korsch; William Y. Chey

Publisher: Elsevier Science
Year: 1975
Tongue: English
Weight: 501 KB
Volume: 69
Category: Article
ISSN: 0003-2697
DOI: 10.1016/0003-2697(75)90562-x

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✦ Synopsis

A simple and rapid method of preparing 1251-labeled secretin of high specific radioactivity has been developed. Synthetic porcine secretin was iodinated with Na[rz51] by a modification of the chloramine T method. Purification and separation of labeled from unlabeled secretin was achieved by chromatography on SP-Sephadex C-25 column. The labeled secretin possessed specific radioactivity as high as 500-550 &i/pg. 34

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