“2 5‐… at 10−5 M in the serosal bathing fluid produced significant … of the acid secretory responses to histamine, pentagastrin and isoprenaline but was without effect on basal secretion or that due to bethanechol, … cyclic adenosine 3′,5′‐monophosphate (db cyclic AMP) or phosphodiesterase inhibition with ICI 63197.”