RELA and atherosclerosis: Then, by immunohistochemistry we analysed the protein levels of IKKβ, IKKα and p65 in human vascular samples (Figure 2) and confirmed a significant increase of IKKα, IKKβ and p65 in vascular samples from ACA in relation to CAs or subjects with early atherosclerosis (Figures 2A, 2B, 2C and 2D, respectively).