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  _____    _    _     _____     ______     _____  
 /  ___|| | || | ||  / ____||  /_   _//   / ___// 
| // __   | || | || / //---`'   -| ||-    \___ \\ 
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 \____//   \____//   \_____||  /_____//  /____//  
  `---`     `---`     `----`   `-----`  `-----`

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Text this: Use of genetically modified bacteria to repair cracks in concrete