title: The fine structure of acellular cementum in young human premolars.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001641:Bicuspid / Q000032:analysis* / Q000648:ultrastructure; D002648:Child; D003094:Collagen; D003739:Dental Cementum / Q000648:ultrastructure*; D003804:Dentin / Q000648:ultrastructure; D006801:Humans; D008722:Methods; D008854:Microscopy, Electron; D014092:Tooth Root / Q000648:ultrastructure*
chemical_list: D003094:Collagen