mollusc venom
Venoms from mollusks, including the Conus and Octopus species. The venoms contain proteins, enzymes, choline derivatives, slow-reacting substances, and several characterized polypeptide toxins that affect the nervous system. Mollusk venoms include cephalotoxin, venerup in, maculotoxin, surugatoxin, conotoxins, and murexine.