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Fold-change in mRNA expression of the olfactory GPCRs and nrn1 following acute Cd exposures and a depuration (light grey box). The 3.7 ppb and 347 ppb datasets are represented as squares and triangles, respectively. Data represent the mean ± SEM of n=8 individuals normalized to the expression of β-actin mRNA, and expressed as fold-change to control levels. * indicates statistically significant differences in gene expression relative to controls (p <0.05).
