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Figure 1


Fig. 1. (A–D) Scanning electron micrographs of gill filaments from crucian carp kept in normoxic water at 8°C (A,B), in hypoxic water at 8°C (C), or in normoxic water at 25°C (D). Scale bars, 150 µm (A); 50 µm in (B–D) (from Sollid et al., 2003; Sollid et al., 2005a).