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Fig. 4. Na+,H+-exchanger 2 (NHE2) mRNA expression in
killifish gills after transfer from brackish water (10% seawater) to brackish
water (BW, hatched bars) or freshwater (FW, black bars)
(N=710). NHE2 is not expressed in killifish opercular
epithelium. Expression is relative to the expression of EF1
and is
normalized to 12 h brackish water controls. Values are means ±
S.E.M. *Significant difference from
time-matched brackish water control (P<0.05);
significant difference from 12 h brackish water control
(P<0.05).