PBMC adhesion to HUVEC, hMEC-1, hTERT-LEC, and HMVEC-dLy Neo under control and TNF-α stimulations. Pre-stimulation of endothelial cells with TNF-α caused a significant increase (*p<0.01) in the number of PBMC adhered to HUVEC, hMEC-1, hTERT-LEC, and HMVEC-dLy Neo compared to the unstimulated controls with the highest adhesion observed to HUVEC. PBMC adhesion to all endothelial cell models increased with increasing concentrations of TNF-α and plateau at 10 ng/ml. Pooled results from 28 independents experiments, each in duplicate (n=56). *significant difference compared to control group, †significant difference between groups, p<0.05.