Hyaluronidase is a naturally occurring enzyme that depolymerizes hyaluronic acid by cleavage of glycosidic bonds and has been utilized in ophthalmic surgery.

Neuromedin U-25 human is the active form of neuromedin U in human. Neuromedin U-25 human inhibits glucose-stimulated insulin secretion, which leads to early-onset obesity. Neuromedin U-25 serves as vasoconstrictor in human vascular beds.

[Arg8]-Vasotocin (TFA) is a nonmammalian vertebrate neurohypophyseal peptide.