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Figure 1


Fig. 1. (A) Extracellular recording from the frontal connective in an isolated frontal ganglion (FG) preparation. Bath application of 10-7 mol l-1 Manduca ecdysis-triggering hormone (ETH) increased the burst frequency. (B) Manduca pre-ecdysis-triggering hormone (PETH) and ETH effects on the FG rhythm. Results are shown as the change in burst frequency relative to control (means ± s.d., N=6, 6 and 9, respectively; *P<0.05; NS, not significant). (C) Manduca EH transiently inhibited the FG rhythm. Continuous extracellular recording (as in A; arrow indicates time of EH application).