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Fig. 3. Whole-body Na+ uptake rate in neonate and adult water flea
Daphnia magna after pre-exposure to 1% dimethylsulfoxide (DMSO), in
the absence of Cl– (replaced with equimolar gluconate) in the
external medium (Gluco) or after pre-exposure to 2,4,6-triaminopyrimidine
(TAP, 10–3 mol l–1). Data are expressed as
mean ± 1 s.e.m. (N=6). Note the different axis scale for
neonate (left) and adult (right) daphnids.