MA plot of a single EBV-transformed cell. (a-c) MA plot for EBV-transformed single lymphoblastoid cell 1162 before normalization (a), genomic DNA before normalization (b), EBV-transformed single lymphoblastoid 1162 after channel standardization (c). The red line represents a lowess curve fitted to the data. Note that after normalizations, most of the log2 ratio values are distributed randomly around zero.
Cheng et al. Genome Biology 2011 12:R80 doi:10.1186/gb-2011-12-8-r80