“…Topical anti-inflammatory effect (EA) was evaluated according to the following equation: %EA¼ [W c À W s /W c ] Â 100; where W c and W s are the difference median values of the weights of the right and the left ear sections of the control (W c ) and the treated animals (W s ) respectively (Delporte et al, 2003). The murine macrophage cell line RAW 264.7 was maintained in DMEM Ham´s F-12 medium supplemented with 10% fetal bovine serum, L-glutamine (1 mM), penicillin (100 U/mL), streptomycin (100 mg/mL), gentamicin (40 mg/mL), acquired in Life and Technology (Barcelona, Spain) and L-arginine (1 mM, Sigma, St. Louis, MO, USA) in a humidified 5% CO 2 atmosphere (Díaz-Viciedo et al, 2008;Girón et al, 2010).…”