Figure 2.

The figure (magnification × 5000) demonstrates the findings of electron microscopy at months 1 and 6. (A and B). Normal salivary gland samples of the control group. A and D. Intracellular vacuoles and intercellular edema related to radioiodine in Group 1. E and F. We observed intracellular vacuoles, intercellular edema, nucleus of fibroblast and collagen fibers (fibrosis) at 1^st month evaluation in the treatment groups (Groups 5 and 6); G to J. Improvement in cellular damage at 6^th month in the stem cell-administered groups (Groups 5 and 6). On the images; c: collagen fibers; e: intercellular edema; f: nucleus of fibroblast; n: nucleus, p: dilated perinuclear cistern; v: intracellular vacuoles.