ICAM-1 mRNA expression at 72 h after infection in the cells pretreated and treated with vehicle before and after infection did not differ from the mRNA expression in the untreated cells (the relative amount of ICAM-1 mRNA at 72 h after infection compared with that in the untreated cells: 1.05 ± 0.02 in the HTE cells and 1.03 ± 0.05 in the HNE cells, n = 3, P > 0.30). The gene discussed is ICAM1; the disease is infection.