Choose the correct answer
Systemic lupus erythematosus is caused by which of the following mechanisms?
Immune complex formation between auto antibodies and nuclear, red-cell and phospholipid antigens and deposition in various tissues
Auto-antibody production to intracellular junctions of dermal epithelial cells and activation of proteases
Systemic vasculitis caused by deposition of hepatitis B antigen-antibody complexes in vessels around the body
Activation of CD4 T cells against dermal epithelial cells
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