Figure 1.Hematoxylin and eosin (H&E) stained tissue sections showing age-related morphological changes in human parotid and submandibular glands. (A) The morphology of adult and aged salivary glands, bar size: upper (200 um), lower (50 um). (B–D) The quantifications of lipocyte, leukocyte infiltration and acinar area. Results are presented as the mean ± SD and T-test was performed for statistical analysis **p < 0.01, *p < 0.05.
