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Figure 9


Fig. 9. Summarized effects of putative transmitters (serotonin, dopamine, norepinephrine, FMRFamide and Leu-enkephalin) at different concentrations (10-6 mol l-1 to 10-9 mol l-1) on the frequency of contractile ciliary arrests. Asterisks indicate significant difference when compared with the control group (P<0.05).