Virusähnliche Strukturen in einem Lymphknoten bei Lupus erythematosus visceralis

The electron microscopic investigations of a lymph node in systemic lupus erythematosus revealed cytoplasmic inclusions of interwoven, net-like, electron dense appearance. They were found predominantly in lymphocytes, activated lymphocytes, immunoblasts, plasma cell precursors and plasma cells. Rarely they occurred in reticulum cells. Most probably those structures represent the inner (nucleoproteid) component of myxoviruses (influenza- or parainfluenza-virus) or paramyxoviruses.