Fig. 3From: Establishment of perpendicular protrusion of type I collagen on TiO2 nanotube surface as a priming site of peri-implant connective fibersSEM images of titanium surface through anodization. a 1 V × 1 h, b 1 V × 3 h, c 1 V × 5 h, d 5 V × 1 h, e 5 V × 3 h, f 5 V × 5 h, g 10 V × 1 h, h 10 V × 3 h, i 10 V × 5 h, j 20 V × 1 h, k 20 V × 3 h, l 20 V × 5 h, m 30 V × 1 h, n 30 V × 3 h, o 30 V × 5 h, p 50 V × 1 h, q 50 V × 3 h, r 50 V × 5 h, s TiO2/control. Original magnification ×100,000Back to article page