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Fig. 3. Effects of various periods of aerial exposure on the concentrations
(µmol g-1 wet mass or µmol ml-1; N=4) of
urea in (A) muscle, (B) liver, (C) brain, (D) gut and (E) plasma of
Monopterus albus. Values are means + S.E.M. W, in water;
A, in air; asignificantly different from the 0 hwater control
value; bsignificantly different from the value of 24 h in air;
csignificantly different from the value of 72 h in air;
dsignificantly different from the value of 144 h in air.