Gene expression of <i>cystic fibrosis transmembrane conductance regulator</i> (<i>cftr</i>) and <i>sodium potassium ATPases</i> (<i>nka</i>).

<p>Expression levels of <i>cftr</i> (a), <i>nka</i>-α1 (b), <i>nka</i>-α3 (c) in gills and EGI tract of tilapia acclimated to freshwater (FW), seawater (SW) and hypersaline water (HSW). Each histogram bar represents the mean ± s.d. of the expression levels (log₁₀ copies of transcript per 50 ng cDNA). Expression levels labeled with different lowercase alphabets are significantly different (one-way ANOVA followed by Duncan's post-hoc test; <i>P</i><0.05) within the same tissue.