★ Immune System Quiz
White blood cells are the main cells of the immune system. Where are they produced?
A. Bone marrow
B. Veins & arteries
C. Stomach
D. None of the above
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As seen in many patients with lupus, the hallmark “butterfly rash” appears
A. On the chest or back
B. Across the nose and cheeks
C. Across the pelvis
D. Between the shoulder blades
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