Fig. 3

ATRA preserves the structure of the abdominal aortic wall and reduces MMP2, MMP9, and CD68 expression in abdominal aortic cross-sectional slices. a-d: EVG staining of the four groups. e-t: SM-αA, MMP2, MMP9, and CD68 immunohistochemical staining of different groups; the photographs show the immunohistochemical changes in the abdominal aorta (indicated by the black arrows). (A-X, × 400): Scale bar is 50 μm