What molecules are expressed on the surface of NK cells to manipulate the killing action?
A. Inhibitory receptor
B. Activating receptor
C. MHC I molecule
D. MHC II molecule
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Antibodies can protect the host against invasion of pathogens through what methods?
A. Neutralization
B. Opsonization
C. Recruiting complement proteins
D. Antibody-dependent cell-mediated cytotoxicity
CD19 is expressed on what cells?
A. B-1 cells
B-2 cells
C. T cells
D. Regulatory B cells
Which of the following cytokine is releases from virus-infected cells soon after infection?
A. TGF-β
B. IL-10
C. IFN-α
D. IL-2
Which type of immunoglobulin can cross placenta?
A. IgD
B. IgE
C. IgG
D. IgM
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