Figure 1
From: An elevated IgG4 response in chronic infectious aortitis is associated with aortic atherosclerosis
Immunohistochemical staining of the four infectious aortitis groups. Depicted are representative IgG4 immunohistochemical stains of the adventitia with corresponding IgG stains as insets of an acute ascending infectious aortitis (a), a chronic ascending infectious aortitis (b), an acute distal infectious aortitis (c), and a chronic distal infectious aortitis (d).
