TEM image of cross-section of femur.

Abstract

<p>a) Bright-field image; scale bar = 100 nm. Low-contrast (light) areas surrounded by dark linear features are believed to be sections through collagen fibrils, many of which have been punctured by ion beam during ion milling; b) selected area diffraction pattern; note spotty 00l rings confirming that c-axes of HA are oriented normal to plane of section.</p