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Figure 2


Fig. 2. Kinetics of mass-specific Na+ uptake rate in neonate and adult water flea Daphnia magna as a function of sodium concentration. Data are expressed as mean ± 1 s.e.m. (N=6). Kinetic parameters (Michaelis constant [Km] and maximal velocity [Vmax]) for sodium uptake in neonate and adult daphnids were determined by means of nonlinear regression analyses (one-site binding), as previously described (Bianchini and Wood, 2003).





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