Fig. 3. The effect of FW–SW (closed symbols) or FW–FW (open symbols)
transfers on β1-subunit mRNA levels in Atlantic salmon gill.
Transcript levels are shown in amol 20 ng–1 total RNA.
Asterisk indicates the difference between FW and SW groups at a certain time
point (P<0.05). FW, freshwater; SW, seawater.