An Endogenous SCP-Related Peptide Modulates Ciliary Beating in the Gills of a Venerid Clam, Mercenaria mercenaria

The activities of both the lateral and frontal cilia of Mercenaria mercenaria were unaffected, either by the two endogenous SCP-related peptides AMSFYFPRMamide and YFAFPRQamide, or by FMRFamide (all at 10-6 M). Dopamine (DA) inhibited the lateral cilia; the mean EC50 was 2× 10-6 M. The peptide YFAFP...

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