Fig. 7

a Inflammation down-regulated expression of natural pig thrombomodulin (TBM) Expression of natural pig thrombomodulin was down-regulated after exposure to TNF-α, and was confirmed by real-time PCR (*P < 0.05, **P < 0.01). (The expression of pig thrombomodulin in GTKO/CD46 pig aortic endothelial cells [pAECs] was measured by real-time PCR. The PCR primer sequences used were: pTBM: Sense 5′- GAA GCT ATG AGG TCC AGC CC − 3′; Antisense 5′- CAG ACA GAC AGC GAA GAG CA − 3′.) (Details in ref. [104]). b Inflammation did not down-regulate expression of transgenic human TBM. The expression of transgenic human thrombomodulin was upregulated, confirmed by flow cytometry. Transgenically-expressed human thrombomodulin would appear to be resistant to down-regulation by inflammation. (The expression of human thrombomodulin in human thrombomodulin-transgenic pAECs was measured by flow cytometry (clone 1A4, BD Biosciences, San Jose, CA)