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Fig. 2. Elevated dietary salt intake increases the expression of genes involved in
ion secretion in seawater. (A,B) The results of western blot analysis revealed
a marked increase in Na+/K+-ATPase (NKA; band at 115
kDa) and Na+/K+/2Cl- co-transporter (NKCC1;
band at 160 kDa) protein in fish fed a high salt diet (filled bars;
N=4 for each group). Blots were cropped for presentation purposes.
(C) The levels of NKA, NKCC1 and cystic fibrosis membrane transmembrane
conductance regulator (CFTR) mRNAs in salt-fed fish (N=14) were
increased 5- to 15-fold relative to control fish (N=9). Asterisks in
B and C indicate statistically significant difference from control values
(P<0.05).