Cluster diagram of ΔΔCt values in response to 100 μM arsenate at 3 and 10 day time points as determined by qRT-PCR. Bright green rectangles represent strongly repressed gene expression (-4-fold and lower), whereas genes strongly induced (4-fold and higher) are shown in bright red. Arabidopsis actin was used as a reference gene to calculate ΔΔCt.
Abercrombie et al. BMC Plant Biology 2008 8:87 doi:10.1186/1471-2229-8-87