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

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Text this: Stimulation of the catalytic activity of the tyrosine kinase Btk by the adaptor protein Grb2