Class II MHC Proteins Are Present in the Plasma Membrane

question 118

Multiple Choice

Class II MHC proteins are present in the plasma membrane only when

• A) a helper T cell has engulfed an antigen.
• B) an antigen-presenting cell has engulfed and is processing an antigen.
• C) a virus-infected cell secretes interferons.
• D) a cancerous cell gets attacked by NK cells.
• E) the body cells are healthy.

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