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Fig. 2. The expression levels of Ostf mRNA in PercollTM-gradient-isolated gill
pavement cells (PVCs) and chloride cells (CCs). Gill epithelia were dissected
and digested; the cell suspension was centrifuged in PercollTM gradient
solution. The respective gill cell type was isolated, and total RNA was
extracted and reverse transcribed for real-time PCR assay. (A) Comparison of
Ostf expression levels in isolated freshwater PVCs and CCs.
*P<0.05 compared with the PVC. (B) Change in Ostf mRNA
expression levels in the gill PVCs and CCs isolated from fish at day 0.25, 1,
3 and 7 of seawater acclimation. A significant induction of Ostf mRNA in gill
CCs after 0.25 days of seawater acclimation was measured.
*P<0.05 compared with freshwater CCs. A small but
significant increase of Ostf mRNA in isolated gill PVCs after 0.25 days of
seawater acclimation was noted.
P<0.05 compared
with the isolated freshwater PVCs. The results were obtained from four
independent experiments.