Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/immunology; Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/pathology; Choristoma/immunology; Choristoma/pathology; Lymphangiogenesis/immunology; Adventitia/immunology; Adventitia/pathology; Animals; Aorta/immunology; Aorta/pathology; Atherosclerosis/immunology; Atherosclerosis/pathology; B-Lymphocytes/immunology; CD4-Positive T-Lymphocytes/immunology; Chemokines/metabolism; Graft Rejection/immunology; Graft Rejection/pathology; Humans; Immune Evasion/immunology; Inflammation Mediators/metabolism; Isoantigens/immunology; Lymphocyte Activation/immunology; Macrophages/immunology; Mice; Mice, Knockout; Muscle, Smooth, Vascular/immunology; Muscle, Smooth, Vascular/pathology; Receptors, Tumor Necrosis Factor/physiology; Signal Transduction/physiology; T-Lymphocytes, Helper-Inducer/immunology; Thrombosis/immunology; Thrombosis/pathology