since , at times , chronic urticaria may appear histologically similar to a mild cell-mediated immune response , the release of the t cell-derived lymphokine leucocyte inhibitory factor ( lif ) , in response to incubation with these additives and with acetylsalicylic acid ( asa ) , was measured in vitro using cells from normal controls , from patients with chronic urticaria with or without clinically associated additive sensitivity and from patients with asthma with or without associated asa sensitivity .
C0004057
acetylsalicylic acid
C0004096
asthma