title: Age-related alterations of periodontal structures around the cemento-enamel junction and of the gingival connective tissue composition in germ-free rats.
mesh_terms: D000367:Age Factors; D000818:Animals; D003739:Dental Cementum; D003743:Dental Enamel; D005856:Germ-Free Life; D005881:Gingiva / Q000033:anatomy & histology* / Q000648:ultrastructure; D010519:Periodontium / Q000033:anatomy & histology* / Q000648:ultrastructure; D051381:Rats