Figure 3: Nano-morphology of 300-mm deep layer articular cartilage of normal bovine (scale bars, 500 nm). (a)-(c), AFM topography, peak force error, and 3D topography of bovine articular cartilage in ultrapure water. (d)-(f), AFM topography, peak force error, and 3D topography of articular cartilage sections imaged in air. Arrows in (e) point to fibrils with visible D-spacings which were recruited in the D-spacing analysis.