Fig. 3.

Mean lumen negative transepithelial voltages (V_te; −s.e.m.) of six anterior midguts stimulated with serotonin (0.2 µmol l⁻¹) in the presence (gray bar) and absence (white bar) of luminal methazolamide (200 µmol l⁻¹), and photographs of a representative preparation of the anterior midgut of larval (fourth instar) Aedes aegypti at identical times after perfusion stop in the presence (right) and absence (left) of luminal methazolamide (200 µmol l⁻¹). [Figure reproduced from Onken and colleagues (Onken et al., 2008).]