OB-cadherin lack of expression in FD of the jaws. (a) Positive control of OB-cadherin in basal layer of developmental odontogenic cyst (black star) and focal fibroblasts of connective tissue wall. (b) Strong expression of OB-cadherin in the remodeling bone surrounding odontogenic cyst, further magnification of Figure 3c. (c) Precursors of osteoblasts OB-cadherin positive in mesenchymal stroma during normal bone remodeling (empty stars). (d) OB-cadherin lack of expression in FD of the jaw; LSAB-HRP, nuclear counterstaining with Gill’s type II hematoxylin. Magnifications, ×4 (b,d), ×10 (a), ×20 (c).