Fig. 1.

Optical microscopy and surface features: (a) digital photo of a Longitudinal-Transverse (LT) specimen and a representative optical microscopy image of the specimen surface; visible surface features are circular osteons with central Haversian canal and evenly distributed lacunae. (b) Digital photo of a Short-Longitudinal (SL) specimen and a representative optical microscopy image of the specimen surface; surface features are relatively elongated since the Haversian canals run parallel to this orientation. The final polished surface is clean, smooth and free of abrasion marks.

Credits: Amrita Kataruka, UIUC, 2016.