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MA plot



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MA plots are used to visualize intensity-dependent ratio of raw microarray data. The MA plot uses M as the y-axis and A as the x-axis where M and A are usually defined as: 

\textstyle{M=log_2 R - log_2 G} 
\textstyle{A=\frac12 \times (log_2 R + log_2 G)}
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "MA_plot". A list of authors is available in Wikipedia.
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