Fast and slow rates for LDL

A number of workers have reported on imaging of LDL (low density lipoproteins) with various isotopes, using a gamma camera. They, however, used isotopes with short half-lives such as I-123 and Tc-99. LDL labelled with I-131 would allow for the imaging of the biodistribution for a far langer period - say of up to 10 days after injection. The animals studied, Vervet monkeys, were 2 high responders and 2 low responders on the Western diet, with 2 control animals that were fed the high carbohydrate diet