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Figure 6


Fig. 6. The effects of hypercapnia (water PCO2=7.5 mmHg) on trout gill NHE2 (A) and NHE3 (B) relative mRNA levels. Gill NHE2 mRNA levels were significantly increased at 3, 12 and 24 h of hypercapnia (P values of 0.014, 0.031 and 0.040, respectively). Gill NHE3 mRNA levels were unchanged throughout the period of hypercapnia exposure.