The unusual nature of root formation in molar teeth of the laboratory rat.
D000818:Animals; D003739:Dental Cementum / Q000166:cytology; D008854:Microscopy, Electron; D008963:Molar / Q000033:anatomy & histology*; D009805:Odontogenesis; D051381:Rats / Q000033:anatomy & histology*; D014092:Tooth Root / Q000166:cytology*