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#immune system #lymphoid tissue #throat defense #immune function #bacteria trap

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#taorht #back of throat #lymphoid tissue #pharynx #palatine tonsils

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#pharyngeal tonsil #adenoid #nasopharynx defense #immune system tissue #lymphoid tissue #upper throat immunity #waldeyer's ring

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#pharyngeal tonsil #adenoid #nasopharynx tissue #upper pharynx #lymphoid tissue #head anatomy