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Fig. 2. Temporal occurrence and frequency of cyclic gas exchange patterns in flying
Drosophila. (A) Cyclic gas release often consists of multiple
consecutive CO2 release cycles in a burst (gray). (B) Frequency of
occurrence of cyclic bursts containing different numbers of cyclic
CO2 `waves'. N=12 flight sequences, as shown in
Fig. 1C (12 flies). (C)
Frequency of consecutive CO2 cycles in a single fly. (D) Mean
frequency of CO2 oscillations measured in 12 flies. Red dotted
line, mean value derived from all 12 flies. Values are means ±
S.D.