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Figure 2: The expression of BMP-2 in rats periapical lesions (SP×400). Negative group: a (At week 0), b (At week 2), c (At week 4), d ( At week 8); Vitapex group: e (At week 0), f (At week 2), g (At week 4), h ( At week 8); ZOE group: i (At week 0), j (At week 2), k (At week 4), l ( At week 8)

Figure 2: The expression of BMP-2 in rats periapical lesions (SP×400). Negative group: a (At week 0), b (At week 2), c (At week 4), d ( At week 8); Vitapex group: e (At week 0), f (At week 2), g (At week 4), h ( At week 8); ZOE group: i (At week 0), j (At week 2), k (At week 4), l ( At week 8)