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Canker Sore or Aphthous ulcer

6,998 Views • 01/17/24
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samer kareem
samer kareem
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Canker sores (Aphthous ulcer) are small, painful ulcers on the inside of the mouth, tongue, lips, or throat.Canker sores are white or yellow and surrounded by a bright red area. They are not cancerous.

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