Similar to Montgomery 6.4.9 An article in Nature Genetics ["Treatment-specific Changes in Gene Expression Discriminate In Vivo Drug Response in Human Leukemia Cells" (2003, Vol. 34(1), pp. 85-90)] studied gene expression as a function of treatments for leukemia. One group received a high dose of the drug, while the control group received no treatment. Expression data (measures of gene activity) from one gene are shown in the excel file "Gene data