after undergoing exhaustive studies ( including case histories , cutaneous tests for reactions to food antigen , peripheral eosinophils , secretory and humoral immunity , determination of total ige and of specific rast , exclusion-provocation diets ) and without being able to identify an offender , patients were submitted to oral provocation with different food additives ( tartrazine , sunset yellow fcf , new coccine , erythrosine , sodium benzoate , 4-methyl hydroxybenzoate and acetylsalicylic acid ) after 48 hours of exclusion from their diets of dyes , preservatives and salicylates .
C0004057
acetylsalicylic acid
C0036077
salicylates