PECAM1 and coronary artery disorder: Immunohistochemical detection of PECAM-1 in paired PVAT tissue specimens from 10 patients with CAD confirmed those previous findings by showing a significantly higher density of PECAM-1-immunopositive vessels in C-PVAT compared to IMA-PVAT (25.4 ± 2.75 vs. 12.9 ± 1.79 per mm2, p = 0.004; Figure 1A,D; for findings in negative controls please see Figure S1A).