Figure 3. Immunohistochemical localization of SIBLING proteins in rat teeth. (A) TG2 and SIBLING proteins co-localize in predentin (TG2 and BSP) and along dentinal tubules (TG2, DPP, and DMP1), as represented by red/pink immunoreactivity over these tissue structures. DPP shows additional immunostaining of the intertubular dentin. (B) Immunostaining of cementocytes and their pericellular matrix in cellular cementum of molars. Od, odontoblast; PD, predentin; DEN, dentin; DT, dentinal tubules; Cc, cementocytes. Magnification bars equal 50 µm.