Topics: Autoimmune Disease Quiz
Rheumatoid factor (RF) is an autoantibody directed against:
A. Insulin
B. Fc portion of IgG
C. Myelin basic protein
D. Thyroid-stimulating hormone receptor (TSHR)
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Which complement proteins are commonly reduced during active SLE due to immune complex consumption?
A. C1q and C1s
B. C2 and C4
C. C3 and C4
D. C9 and C5