Neuropeptide detection of a single brain extract on MALDI-TOF/TOF. The abundant peaks in the spectrum are labeled with their masses and amino acid sequences. These peptides belong to several neuropeptide families including RFamide, crustacean tachykinin-related peptide (CabTRP), RYamide, orcokinin, YRamide, SIFamide, and proctolin.