Fig. 1From: Initial seronegative immune-mediated necrotising myopathy with subsequent anti-HMGCR antibody development and response to rituximab: case reportHistopathology from muscle biopsy at time of initial diagnosis. a Haematoxylin and eosin stain demonstrating a pale necrotic fibre (arrow). b Haematoxylin and eosin stain demonstrating a basophilic regenerating fibre (arrow). c MHC class I stain demonstrating patching upregulation of MHC class I. d CD68 stain demonstrating a necrotic fibre infiltrated by macrophagesBack to article page