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What Happens (3)
The macrophage seeks out a helper T cell. Not from any helper T, though. The cell has to recognize the fragments of the virus on the macrophage's surface. Once the macrophage encounters such a T cell, it and that T cell become united. The connecting of these cells sets into motion a series of events—events that, through a multifaceted yet focused attack, lead to the annihilation of the mumps viruses.

Next: How the Viruses Were Wiped Out

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