Fig. 7. 24 h infusions. Representative images of V-H⁺-ATPase immunostaining in gills from (A) colchicine-treated, NaCl-infused, (B) base-infused and (C) colchicine-treated, base-infused fish. Scale bar: 10 µm. (D) The mean number of cells (± s.e.m.) that labelled for H⁺-ATPase per interlamellar space (cells IL^-1) (N=4 for col-NaCl IF, N=5 for the other two groups). No significant differences were found between treatments (1-way ANOVA, Bonferroni's post test).