Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
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Question: What is the the old north no the old south branch of the Rhine called?

Answer: What is the the old south branch of the Rhine called?


Question: What happens when the what cause the immune system to treat foreign organisms like normal tissues?

Answer: What causes the immune system to treat foreign organisms like normal tissues?


Question: Which no make that what do complement proteins activate before they bind to the microbe?

Answer:
What do complement proteins activate before they bind to the microbe?