Research Article

Mouse Thyroid Gland Changes in Aging: Implication of Galectin-3 and Sphingomyelinase

Figure 3

Thyroglobulin in the thyroid gland from young and old mice. Immunohistochemical expression of thyroglobulin. Black arrows indicate staining in interfollicular spaces. In the thyroid of young mice, a low positivity is evident in interfollicular spaces. Strong staining is seen in the interfollicular spaces of old animals. The positivity of staining was measured as the percentage of total area (follicles and interfollicular spaces). Data represent the mean ± S.D. of three independent experiments performed in duplicate. Significance, , versus young sample. 40x magnification.