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ESI QTOF MS2 spectra of neuropeptides from the pericardial organs tissue extract of blue crab C. sapidus. (A) DiLeu 4-plex labeled B-type allatostatin neuropeptide (GNWNKFQGSW-NH2), and (B) orcokinin neuropeptide (NFDEIDRSGFGFA). Relative abundance changes for neuropeptide expression levels among different animals are highlighted in inset tables.
