Zakaria, M N Microbial community in persistent apical periodontitis: a 16S rRNA gene clone library analysis. [electronic resource] - International endodontic journal Aug 2015 - 717-28 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1365-2591 Standard No.: 10.1111/iej.12361 doi Subjects--Topical Terms: AdultAgedAged, 80 and overBacteriological TechniquesCandida albicans--isolation & purificationDental Pulp Cavity--microbiologyEnterococcus faecalis--isolation & purificationFemaleHumansMaleMiddle AgedPeriapical Periodontitis--microbiologyPolymerase Chain ReactionPorphyromonas gingivalis--isolation & purificationRNA, Ribosomal, 16S--analysisRoot Canal TherapyTooth, Nonvital--microbiology