The colour scale indicates the degree of gene expression change. ABA and PBI425 data are from . (b) Clustering of 496 drought and ABA overlapping genes. ABA data are from .<p><b>Copyright information:</b></p><p>Taken from "The relationship of drought-related gene expression in to hormonal and environmental factors"</p><p></p><p>Journal of Experimental Botany 2008;59(11):2991-3007.</p><p>Published online 13 Jun 2008</p><p>PMCID:PMC2504347.</p><p></p