Abstract
Summary
Extraction was made of the protein fraction, Fraction 1, (after passage through a Sephadex G-25 column) of serum of rats fed 125-1 for 50-57 days. The presence of labelled iodotyrosines, 11-13% of the organic labelled iodine, was established. In dogs injected once with 125-1, 12-18% of total serum radioactivity was extractable as iodotyrosines by 12 hours after labelling. In man, iodotyrosines in serum were not found to be labelled, with one possible exception.
Get full access to this article
View all access options for this article.