Fig. 2

Atp6i knockout mice exhibit disrupted tooth root formation with truncated HERS progression. a Representative radiograph and micro-CT images show defective molar root formation and eruption in 3-week-old Atp6i−/− mice compared to WT mice. b Representative photographic images show no tooth eruption (dotted box) and root development (first mandibular molar) in 3-week-old Atp6i−/− mice compared to WT mice. c Representative H&E staining images of first mandibular molars showing normal tooth development in 3-week-old WT mice and impaired root formation in Atp6i−/− mice of the same age. d–f Representative images of H&E staining of sagittal tooth sections from WT and Atp6i−/− mice of 4 days (d), 7 days (e) and 14 days (f) PN. HERS is delineated by the dotted lines and arrow. n = 7 in each group