<p><b>Copyright information:</b></p><p>Taken from "Mapping of oxidative stress responses of human tumor cells following photodynamic therapy using hexaminolevulinate"</p><p>http://www.biomedcentral.com/1471-2164/8/273</p><p>BMC Genomics 2007;8():273-273.</p><p>Published online 13 Aug 2007</p><p>PMCID:PMC2045114.</p><p></p> A, includes up-regulated and down-regulated; B, only up-regulated; C, only down-regulated genes/probes at 1, 2 and 4 h time course. Each circle represents one time point as indicated. A total number of differentially expressed genes in the group are given in the parentheses. The intersections indicate numbers of genes/probe that are shared between the different time points, i.e. the genes that were steady induced. The number in the right bottom of each square indicates a total post processed and analyzed number of genes/probes minus the number of differentially expressed genes presented in circles