Correlation between Transforming Growth Factor-β and Periapical Lesions in Patients with Chronic Apical Periodontitis

Figure 2

Immunohistochemical results of TGF-β. (a, b) Positive expression of TGF-β in the normal control group. (c, d) Positive expression of TGF-β in the experimental group (a, c × 100; b, d × 400).

(a)

(b)

(c)

(d)