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Fig. 4. Transepithelial conductance in isolated half lamellae of gills of
seawater-adapted Cancer pagurus, brackish water-adapted Carcinus
maenas, and fresh water-adapted Eriocheir sinensis. For the
electrophysiological measurements, half lamellae of anterior and posterior
gills were mounted in a modified Ussing chamber. Data represent means ±
S.E.M. with the number of experiments given in brackets. (From
Weihrauch et al., 1999.)