Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2014 May 7;281(1782):20140299. doi: 10.1098/rspb.2014.0299

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2014 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/, which permits unrestricted use, provided the original author and source are credited.

PMC Copyright notice

Figure 1. — Mid-shaft bone histology of the juvenile humerus of Eusthenopteron (NRM P246c). (a) Mesial view of the whole humerus showing the location of the high-resolution scan made at mid-shaft (voxel size: 0.678 μm). (b) Virtual thin section (made along the longitudinal axis) showing the primary bone deposit of cortical bone and its connection to the spongiosa. Some remnants of calcified cartilage are still preserved at the location of Katschenko's line (chondrocyte lacunae) and within the spongiosa (Liesegang rings). (c) Transverse view of the three-dimensional organization of the vascular mesh embedded within the cortical bone and the underlying trabecular spongiosa. (d) Quantification of the volume of bone cells showing three recurrent periods of volume decrease (green layers pointed out with white arrows) interpreted as phases of decreased growth. (e) From left to right: top and longitudinal views of the vascular mesh showing the circular and radial alignment of the vascular canals (in pink). The osteocyte lacunae are represented in bright blue. c, cortical bone; cl, chondrocyte lacunae; Lr, Liesegang rings; ol, osteocyte lacunae; s, spongiosa; v, vascular mesh.