the antagonism of the antiallergic compounds picumast ( pic ; boehringer mannheim ) and ketotifen ( k ; sandoz ) against pro-allergic mediators like histamine ( h ) , acetylcholine ( ach ) , srs-a and ltc4 as well as against the unspecific spasmogen bacl2 was compared in the bioassay of superfused guinea pig ileum .
C0038091
srs-a
C0023542
ltc4