Concomitant polymyositis diagnosed by muscle biopsy developed in a 51-year-old man with hepatitis B surface antigen (HBsAg) hepatitis. Findings from immunofluorescent studies showed deposits of gamma-globulins and complement in both muscle and liver. The HBsAg and HBsAg-antibody complexes were detected in the liver by immunofluorescence using fluorescein-labeled antibody to hepatitis Bs.
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Anastasios A. Mihas (1978) studied this question.
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