Figure 1. Sagittal section of molars in the lower jaw of a 14-day-old mouse. Histological appearance and keratin expression. (A) Hematoxylin and eosin staining. (B) Higher magnification of the distal root of 1st molar (inset in panel A). pod, pre-odontoblasts; eod, early odontoblast; od, odontoblasts; ce, cementoblasts; ob, osteoblasts. (C) Immunoreactivity to pan-keratin. Arrowhead indicates the epithelial cell rests of Malassez.