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Fig. 4. Intragel oxygen measurements of unharnessed specimens of Aurelia
labiata under different oxygen conditions. Values are means ±
S.E.M. White, black and shaded bars represent measurements made in
points t, m and g, respectively (see Fig.
1). Hypoxia=30% air saturation. Anoxia1 and Anoxia2, 1 and 2 h in
anoxia, respectively. Recovery, 2 h in anoxia followed by 2.5 h in normoxia.
All differences in intragel oxygen partial pressures between treatments are
significant, except that
and 
are not significantly different from each other. For N and P
values, see text.