[BioC] M Value

Philipp Pagel p.pagel at wzw.tum.de
Mon Oct 6 17:47:36 CEST 2008

> Is it correct that M value correspond to Log2(Signal in Cy5) -  
> Log2(Signal in Cy3)?


> So in fact my question is how to transform the M value, in over  
> expressed value ?

Just do some basic math:

   M  =  log2(Cy5) - log2(Cy3)
   M  =  log2( Cy5/Cy3 )
 2^M  =  Cy5/Cy3


Dr. Philipp Pagel
Lehrstuhl für Genomorientierte Bioinformatik
Technische Universität München
Wissenschaftszentrum Weihenstephan
85350 Freising, Germany

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