Aphthous ulcer. Close-up of a large aphthous ulcer (canker sore, white, centre) on the palate of a 34-year-old female patient. Aphthous ulcers usually occur on the mucous membrane inside the mouth, causing pain and lasting up to two weeks. In this case the ulcer was caused by a sharp tooth. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Marazzi, Dr. P. |
Bildgröße: | 4285 px × 2857 px |
Modell-Rechte: | vorhanden |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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