| 21. | The bug can infect the respiratory tract, sinuses or ears.
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| 22. | He was taking an antihistamine to combat a chronic sinus problem.
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| 23. | The main side effects from Relenza are sinus problems and diarrhea.
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| 24. | He is recovering from a severe sinus infection which required surgery.
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| 25. | Pseudoephedrine is used to relieve nasal, sinus and ear congestion.
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| 26. | Turgeon has been plagued by back, knee and sinus problems.
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| 27. | The okapi has large palatine sinuses, unique among the giraffids.
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| 28. | The sinuses are typically u-shaped and extremely deep cut.
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| 29. | Medullary sinuses contain histiocytes ( immobile macrophages ) and reticular cells.
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| 30. | In the cavernous sinus it runs alongside the internal carotid artery.
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