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Introduction :
In vertebrates, lymphoid organs, lymphatic vessels, and lymphoid tissues make up the lymphatic system. They are a crucial component of the immune system and work in harmony with the circulatory system.
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- The doctor noted that Bill had no tonsils even though he had never had a tonsillectomy. How do you explain this absence of tonsils, an important diagnostic clue when suspecting XLA?How does the pharyngeal tonsil get infected?If you dissected a fetal pig or a young cat, what difference would you expect in the thymus compared to the adult?
- Name the three kinds of tonsils and state how they differ in umber and location?As you learned, the tonsils are only partially encapsulated. How does this better enable them to perform their function? How does this also place them at greater risk for infection?how does the role of the spleen differ from the role of lymph nodes