Scatter plot of expression differences between cortex and hippocampus in resection (x-axis) and autopsy (y-axis) samples. Expression differences were calculated as base two logarithm transformed ratios of gene expression values. All probe sets showing significant differences in expression levels between the two brain regions, either in the autopsy or in resection samples, are plotted: (a) according to Student's t test; (b) according to SAM. Red dashed lines represent linear regression results and black dotted lines represent expected regression lines with the slope = 1.
Franz et al. Genome Biology 2005 6:R112 doi:10.1186/gb-2005-6-13-r112