Figure 3. Representative photomicrographs in the control group Figure 3. Representative photomicrographs in the control group. (A) Overview of the class III furcation defects (scale bar=2 mm). (B) Higher magnification of the framed area in (A) (scale bar=100 μm). (C) Higher magnification of the framed area in (A) (scale bar=100 μm), toluidine blue staining. N1: apical notch, N2: coronal notch, NB: new bone formation, JE: junctional epithelium. Figure 3. Representative photomicrographs in the control group. (A) Overview of the class III furcation defects (scale bar=2 mm). (B) Higher magnification of the framed area in (A) (scale bar=100 μm). (C) Higher magnification of the framed area in (A) (scale bar=100 μm), toluidine blue staining… J Periodontal Implant Sci. 2017 Dec;47(6):352-362. https://doi.org/10.5051/jpis.2017.47.6.352