Abstract
Conclusions and summary
Wistar strain male adult rats weighing from 90 to 125 g received 0.5 unit of insulin twice a day for 8 days while at normal temperature (24–26°C), and in the cold room (3°C). At normal temperature the insulin-treated animals showed a significant increase in mean acinar cell height of the thyroid, giving a picture of hypertrophy of the thyroid gland. When the insulin treated animals were exposed to cold the thyroid glands showed a decrease in average mean acinar cell heights, as compared with the cold controls.
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