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Fig. 6. The influence of feeding on (A) sodium, (B) chloride and (C) potassium
concentrations of the fluid phases of the gastrointestinal contents in
stomach-1 (cardiac stomach), stomach-2 (pyloric stomach) and intestine in the
dogfish shark. Simultaneously measured values in the blood plasma are also
shown. Means ± 1 s.e.m. (N=68 at each time point). As
points of reference, the dark bars represent the measured values for ambient
seawater (SW) (N=4), and the light bars represent the measured values
for the ingested food (N=5). Within a compartment, means not sharing
the same letter are significantly different (P<0.05). There were
no significant differences in the plasma compartment in AC. In C, for
clarity, x,y,z refers to stomach-2 and a,b,c to stomach-1.