Answer:
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Explanation:
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Langerhans cells exist on the surface of the skin. They help to protect you by keeping dangerous microbes from entering your body. Langerhans cells do this in two very different ways: by protecting your skin from infection and also by stimulating allergic reactions.
They would hire a street urching and suspend him on a wooden frame.
Then they would charge a glass rod by rubbing it on a cloth and then touch the boy.
Done several times, he would accumulate charge so that bits of papers, leaves and feathers were attracted to him.