In vivo study of Ti-P-EN antibacterial properties. X-ray images (A) and micro-CT results (B) of the femoral medullary cavity of rats into which a Ti rod was implanted obtained at 3 weeks after surgery and quantitative data for BV/TV (C1), Tb.Th (C2), and Tb.Sp (C3) obtained from the micro-CT analysis are shown. d, days; w, weeks. *, P < 0.05.