Research Article

circRNA CDR1as Regulated the Proliferation of Human Periodontal Ligament Stem Cells under a Lipopolysaccharide-Induced Inflammatory Condition

Figure 1

Representative intraoral dental radiographs of donors. (a) Radiograph of a donor with periodontitis shows severe periodontal loss. (b) Radiograph of a healthy donor undergoing teeth extractions for orthodontic treatment purposes. The arrows indicate the teeth that will be extracted.
(a)
(b)