CD244 and myositis disease: When comparing the proportions (% of total T cells), CD244+ cells (median 33.4 %, range 0–85.7 %) were present in approximately 10-fold higher proportion compared to FOXP3+ cells (median 3.4 %, range 0–71.1 %, p = 0.01) in the myositis muscle tissue (Fig. 2h).