Phagocytes in thymus are very few.

胸腺吞噬细胞含量甚少。

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When we get an infection, white blood cells called phagocytes leap into action.

人感染时，机体的白细球吞噬细胞行动起来消除感染。

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When we get an infection, white blood cells called phagocytes leap into action.

人感染时，机体的白细球吞噬细胞行动起来消除感染。

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