[BioC] Why "M" values?

[Jenny Drnevich]

Hi all,

Sorry to abuse the list with this general microarray question, but I was 
hoping someone could quickly help me out with this... why are M-values 
(log2(ratio of expression in A to B)) called M-values?

Thanks,
Jenny

Jenny Drnevich, Ph.D.

Functional Genomics Bioinformatics Specialist
W.M. Keck Center for Comparative and Functional Genomics
Roy J. Carver Biotechnology Center
University of Illinois, Urbana-Champaign

330 ERML
1201 W. Gregory Dr.
Urbana, IL 61801
USA

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e-mail: drnevich at uiuc.edu