A thin layer of predentin adjacent to the odontoblasts is stained pink, mineralized dentin appears medium blue and enamel matrix is stained a dark blue. Notice the artifactitious separation between the dentin and enamel at the dentinoenamel junction. At the cuspal region of the developing tooth the stellate reticulum has regressed and the outer enamel epithelium is juxtaposed to the stratum intermedium. H&E, 40x