Cellular Immune Response III

Question 1

Innate Immunity

Answer 1

• NK cells identify infected cells
• Apoptosis
• Macrophages kill infected target cells
• IFNγ
• Physical barriers
• Toll-like receptors: inside cell

Question 2

Adaptive Immunity

Answer 2

-dendritic cells- phagocytize virus
-MHC I w/ anitgen
-T cells -/+ cell receptor recognizes antigen on MHC I
CD3, CD8-MHC I
-T cell activation- divide, differentiate, memory cells, helper cells, cytotoxic cells
-Apoptosis-CD8 releases granzymes & perforin
-Caspase enzymes activation causes apoptosis on target cell

Question 3

Viruses are intracellular pathogens so what response is involved?

Answer 3

cellular immune response