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Fig. 9. Following treatment with H2O2, gastrovascular flow
within stolon tips virtually ceases. Oscillations in lumen width (µm) over
time (seconds) for stolon tips of a control colony (filled circles) and a
colony treated with 5 mmol l–1 H2O2
(unfilled circles). The treated colony shows much smaller amplitudes and
similar periods of oscillations; total stolon width was the same for both
colonies.