Fig. 2

 H&E staining of submandibular glands of mice in the blank (A), model (B), HCQ (C), FRZ-H (D), FRZ-M (E) and FRZ-L (F) treatment groups. Red arrows indicate the tissue infiltration and abnormal ordering of the acini and ducts. Scale bar = 100 μm (magnification, ×200) in the left panel and 50 μm (magnification, ×400) in the right panel. The cytoplasm of submandibular gland tissue cells is stained red, and nuclei are stained blue