... Bioscience, The University of Queensland, Brisbane, Queensland, AustraliaMarsupials are born in an immature state and many of the developmental processes that occur in thesemammals take place during ... Committee.Acetylcholine, atropine, concanavalin A, CCK-8 andCCK-8-NS were obtained from Sigma-Aldrich. Alamar bluewas obtained from Astral Scientific (Caringbar, New SouthWales, Australia).Guinea pigs weighing approximately ... pro-cessing intermediates. Am J Physiol 252, G315–G319.39 Anastasi A, Erspamer V & Endean R (1968) Isolationand amino acid sequence of caerulein, the active peptide in the skin of Hyla caerulea....