Effects of combined administration of MAPK inhibitorsin vivo. Late phase eosinophilia was induced in mice pretreated either with 5 mg/kg U0126 and 5 mg/kg SB 203580 or with the combination thereof. BAL was performed and total cell number and differential leukocyte count was determined. OVA challenged vehicle-treated animals were taken as positive control. Each column represents mean ± s.e.mean. n = 5 mice per group. *p < 0.05 (versus OVA challenged vehicle control), +p < 0.05 (versus U0126 alone).