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riccalacerda writes: Sinus Infections (Sinusitis or Rhinosinusitis), is a swelling or inflammation of the tissues or four pairs of paranasal sinuses which are cavities surrounding the nose. The main function of sinus is to warm, moisten and filter the air in the nasal cavity. They are also responsible for our ability to vocalize certain sounds.

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Center meeting at 4pm in 2C-543.