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RNA Is the Cell’s Emergency Alert System (www.quantamagazine.org)

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When the sun shines on your skin, what does it hit? When it causes a burn, what went wrong? Underneath that pain is your cells’ emergency response to DNA damage. When a hazard, such as ultraviolet light, ionizing radiation or certain chemicals, damages DNA, the cell needs to respond at breakneck speed. Ideally it either repairs the damage to its genomic information repository…

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