Fig. 7. Effect of 1% dimethyl sulfoxide (DMSO), 100 µmol l^–1 ethylisopropylamiloride (EIPA), 100 µmol l^–1 ethoxzolamide (ETOX) and 1 µmol l^–1 bafilomycin (Baf) on un-bled (closed circles) and bled (gray bars). N=10 snails for each except un-bled EIPA (N=5), un-bled bafilomycin (N=7), and bled non-DMSO control (N=8). Both un-bled and bled snails were treated as indicated. ^ABled snails in drug treatments had significantly lower Na⁺ uptake rates than those in DMSO carrier control. ^BUn-bled snails in experimental control and those treated with ETOX had significantly greater unidirectional influx rates relative to those in the DMSO carrier control medium. Values are means ± s.e.m.