RUBCN and rheumatoid arthritis: We next performed I.F. analyses of Rubicon in various complement-mediated conditions including coronary artery tissues from heart transplant patients with ABMR (n = 6, Fig. 6d), synovial tissues from patients with rheumatoid arthritis (RA, n = 4, Fig. 6e), and renal tissues from patients with systemic lupus erythematosus (SLE, n = 5, Fig. 6f).