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Fig. 7. Carbonic anhydrase activity (µmol CO2 mg
protein1 min1) in anterior (G4, black
bars) and posterior (G8, gray bars) of green crabs acclimated to 32 p.p.t. and
transferred to 10 p.p.t. for 4 days. 32, 32 p.p.t. acclimated controls;
10-4days, intact crabs assayed after 4 days at 10 p.p.t.; 10-4daysESA,
eyestalk ablated crabs assayed after 4 days at 10 p.p.t.. Values are means
± s.e.m. (N=6). T=12°C. Different letters
indicate statistical differences in G8 at P<0.05 across
treatments.