Figure 2. Mouse incisor GBHA staining. (A) Normal incisor stained with GBHA showed minimal staining in the secretory stage (S) enamel, no staining in the transition stage (T), and a modulation during the maturation stage (2 red bands designated with arrows). (B) CF incisor stained with GBHA showed similar secretory (S) and transitional (T) stage staining, but showed no visible staining in the maturation-stage enamel (M).