Figure 1 in The first record of fossilized soft parts in ossified tendons and implications for the understanding of tendon mineralization

Figure 1. Light microscopy and SEM of petrographic thin sections and etched surfaces of fossilized ornithischian tendons of Edmontosaurus regalis: A, B, ground section (transverse) of the smaller tendon under transmitted normal light (A) and polarized light alpha-compensation mode (B) exhibiting primary organization of tissue; C, D, ground section (transverse) of the periphery (C) (under transmitted normal light) and centre (D) (under polarized light) of the larger tendon; E, circular backscatter detector (CBS-SEM) image of the etched surface of the tendon shows structures interpreted as vascular canals with vessel-like morphology and attached cell-like structures, well visible branched protrusions (red arrow) are also visible; F, CBS-SEM image longitudinal section of the vessel-like canals with cell-like structures attached to the wall (blue arrow). White arrows indicate young Haversian canals, green mark secondary osteons, and yellow point at bone cell lacunae.