Abstract
Summary
After an oral dose of Na131 I to rats, sacrificed after 48 hr, liver lecithin had maximum radioactivity compared to other phospholipid components; neutral lipids were devoid of any activity. Liver lipids had more activity than thyroid or plasma lipids. Plasma lipids had negligible activity after intravenous injection of Na131I after periods ranging from 15 min to 6 hr. Plasma lecithin does not seem to be a carrier of iodide in the blood. Liver slice or homogenate experiments failed to show any enzymatic process connected with association of lecithin with iodide.
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