(A) T2 group: All thyroid follicles showed small in size and empty for colloid with hyperplasia of epithelial cells (H) which lined follicles, also there is high congestion of the blood vessels (C) and thickening of the interstitial tissue (T). 10X H & E. (B) Hyperplasia of epithelial cells which lining the follicles (H). The follicles showed small in size and devoid colloid (F). 10X H & E. (C) Higher magnification, the thyroid follicle showed hyperplasia (H) with desquamation (D) within the lumen of epithelial cells and thickening of interstitial tissue of thyroid. 40X H & E.