Each bar corresponds to the mean for at least three assays (*P<0.05, **P<0.01, ***P<0.001). (A) Apocynin or plumbagin inhibition of the fluorescence emitted by fibroblasts triggered by DHA. Controls correspond to fibroblasts grown for 4 h with ethanol (negative), DHA (positive) or inhibitor alone. (B) Enhancement of fluorescence of fibroblasts triggered with 15 μM of AA, DHA or EPA for 4 h. Unlike other PUFAs, CLA decreases the fluorescence. Control corresponds to fibroblasts triggered with ethanol for 4 h.