Serum IL-1,IL-6 and IL-8 were determined by subjects-using enzyme linked immunosorbent assay (ELISA technique) in 40 children with bronchial asthma consisting of 20 cases in the acute stage and 20 cases in the remission stage, and another 20 health children as normal control,respectively. The results showed that the levels of serum IL-1(11. 9pg/ml± 2. 84pg/ml),IL-6(0. 75ng/ml±0. 3ng/ml)and IL-8(0. 08ng/ml±0. 05ng/ml)in the acute stage were significantly higher than those in the remission stage(8. 41pg/ml±0....