Fig. 7From: A complex histopathological challenge: suspicion of an osteoblastoma-like osteosarcoma arising from the second thoracic vertebra in a catImmunohistochemistry (IHC) for Collagen I. Diffuse positivity evidenced by the brown colour of the reactive woven bone and the extracellular osteoid matrix of the tumour, 200x. Hematoxylin was used for counterstainingBack to article page