Inaperisone is a novel centrally acting muscle relaxant that inhibits the voiding reflex. Inaperisone may inhibit the voiding reflex by acting indirectly on GABAB receptors in the brainstem.

H-Arg-Arg-Glu-Glu-Glu-Thr-Glu-Glu-Glu-OH

Bursin is a peptide that can be isolated from the bursa of Fabricius of chicken. Bursin induces the phenotypic differentiation of mammalian and avian B precursor cells. Bursin also increases cyclic guanosine monophosphate in cells of the human B-cell line Daudi, its derivatives are able to protect against infection by amplifying the immune response induced by H9N2.