Mouse anti-Tritonia Diomedea Small Cardioactive Peptide B monoclonal antibody for IHC. Cardioactive peptide (CCAP) is a cardioregulatory neurohormone that increases heart beat rate during adult wing inflation. This protein has no effect on beat amplitude. The effect of cardioactive peptide is both ino- and conotrophic. Cardioactive peptide has tissue specificity within the central nervous system and most neurons exhibit coexpression with burs.