ICAM1 and bronchopulmonary dysplasia: Next, we verified that the ICAM-1 mRNA level in MLE-12 cells indeed increased after stimulation with low-dose sTN-C (Fig. 5D) and that the ICAM-1 mRNA level was also significantly greater in both hyperoxia-treated MLE-12 cells and the lungs of BPD-like mice (Fig. 5E-F).