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. 2021 Oct 28;17(2):750–762. doi: 10.1016/j.jds.2021.10.003

Figure 7.

Figure 7

The impact of NAC on the expression levels of COL1 in PDL at the tension side in rats under orthodontic treatment. (A) Representative IHC images of COL1 in the PDL tissue around distal to the cervial third of mesiobuccal root of the maxillary first molar (the scale bar represented 20 and 50 μm). (B) Quantitative analysis of mean integrated optical density (IOD)/Area for COL1 in the PDL tissue around distal to the cervial third of mesiobuccal root of the maxillary first molar by Image-Pro Plus 6.0 software. N = 3 specimens/group. ∗P < 0.05 versus the control group, respectively.