Fig. 12
Photomicrograph of section of thyroid gland of the group administrated carbimazole only showing thyroid follicles with variable size. A decrease in colloidal material in some follicles and vacuolation in the cytoplasm of follicular cells (V) and loss of their epithelium lining. Presence of inflammatory cells aggregation and dark stained nuclei (pyknotic) (arrow). In some follicles, multiple layers of follicular cells are seen (arrowhead)