Figure 4 shows double-labelling results in TABs and aorta tissue of GCA+ patients (see also Supplementary Figure S3). Interestingly, colocalization of MxA and CD8+ was more prevalent in TABs compared to aorta tissue and colocalization patterns in TABs varied for each patient. Unsurprisingly, MxA was not only expressed by CD8+ T cells, but other cell types in the vessel wall also expressed MxA (Figure 4). Here, MX1 is linked to temporal arteritis.