Fig. 4From: Factors associated with refractory autoimmune necrotizing myopathy with anti-signal recognition particle antibodiesBAFF-R staining of ANM-SRP(× 1000). BAFF-R was positively expressed on the surface of inflammatory cells surrounding muscle fibers (a, arrow) or on the surface of inflammatory cells surrounding and invading necrotic muscle fibers (b, c, arrow). No BAFF-R positive expression was found in healthy controls (d)Back to article page