Figure 1From: Relationship between intratumoral expression of genes coding for xenobiotic-metabolizing enzymes and benefit from adjuvant tamoxifen in estrogen receptor alpha-positive postmenopausal breast carcinomamRNA expression levels of the seven selected genes. (a) Comparison between normal breast versus estrogen receptor alpha (ERα)-positive breast tumors. (b) Comparison between ERα-negative versus ERα-positive breast tumors. P value, Mann–Whitney test. Box central bar, median mRNA level.Back to article page