Fig. 1

Mkx deficiency causes tendon heterotopic ossification. a HE (left) and immunofluorescence staining of OCN (middle) and MKX (right) in the tendons of normal individuals and HO patients. Scale bar, 50 μm. b, c Micro-CT examination of Achilles tendons (b) and patellar tendons (c) from WT and Mkx−/− mice. Scale bar, 1 mm. d, e Safranin O-Fast green staining of Achilles tendons (d) and patellar tendons (e) from WT and Mkx−/− mice. Scale bar, 50 μm