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

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Text this: Oxygen versus reactive oxygen in the regulation of HIF-1 ?: the balance tips