Figure 3

Representative images of 4-μm-thick sections from the midsagittal region of decalcified paraffin-embedded femurs were stained with haematoxylin and eosin. Groups C and PC showed insufficient bone regeneration at 4 weeks postoperatively (PO). n = 5–6 per group. Black bar represents 200 μm. CIA; collagen-induced arthritis, P.g; Porphyromonas gingivalis administration.