STRUCTURAL AND FUNCTIONAL CHANGES IN RAT THYROID EXPOSED TO BOTH COMMON GAMMA RADIATION AND IODINE
“Monclavit -1” drug having been introduced to rats one day before and three days after exposure to radiation showed a pronounced radioprotective properties bringing to the norm of thyroid function in animals kept in endemic area with chronic iodine deficiency. At 10 days the level of thyroxine and triiodothyronine increased by 86.3% and 98.4% accordingly and at 30 days triiodothyronine level increased by 5.5% while the level of free thyroxine reduced by 23.5%. According to thyroid micromorphometric studies at 10 days rats treated with Monclavit -1 increased follicle diameter by 23.4% while follicular epithelium thickness remained the same. At 30 days follicular epithelium thickened by 11.4% while diameter of follicles decreased by 6.8%.