Why are tattoos permanent?
Chemistry For Your Life
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Macrafages Respond to Tissue Invasion
"It's not like it's injecting in the way that we think a syringe wood whatever, right? We're like, it's kind of just squishingshing it in. It is strange," he says. "What's very cool about this is the needles are puncturing the skin, so they literally are wounding you." The pigment is left behind inside your wound, and then when you get a wound, your immune system responds.
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