Genes responsive to hydrogen peroxide and arsenic. Nineteen of 26 genes are represented in this figure. Among 9 arsenic up-regulated genes, 2 (CDw52 and ALOX5AP) are also up-regulated by hydrogen peroxide. Among 17 arsenic down-regulated genes, 7 (C17, TERT, MYC, GJA1, SOX18, CCNA1, and STAB1) are also down-regulated by hydrogen peroxide (only 5 were presented in this figure); see Figure 4. Values are averages of triplicates. Independent experiments were performed at least twice with similar results.