“ ASN , when added at 0.1 to 30 mM, increased short-circuit current in a … stimulation of Cl- secretion by ASN was blocked by pretreatment with serosal tetrodotoxin and bumetanide and was inhibited by preincubation with capsaicin (8-methyl-N-…-monomethyl-L-arginine, reduced ASN-stimulated secretion by > 70%.”