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

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Text this: Identification of residues involved in water versus glycerol selectivity in aquaporins by differential residue pair co-evolution