D Question 9 2 pts What is true for MHC Il receptors? O They interact with CD8 p

Question

D Question 9 2 pts What is true for MHC Il receptors? O They interact with CD8 positive T cells O They are found on the plasma membrane of all nucleated cells in the body O They express endogenous antigen on the cell surface O They are expressed on the plasma membrane of antigen presenting cells D Question 10 2 pts How is your immune system best able to identify virally-infected cells? O Virally-infected cells express endogenous antigen on the cell surface that is identified by cytotoxic T cells O Virally-infected cells express endogenous antigen on the cell surface that is identified by B cells O Virally-infected cells express exogenous antigen on the cell surface that is identified by helper T cells O Virally-infected cells express exogenous antigen on the cell surface that is identified by Natural killer cells

Explanation / Answer

ans1.d.they are expressed on the plasma membrane of antigen presenting cells

explanation - expressed only on APC identified by cd4+ T cells

ans 2.a.virally infected cells present endogenous antigen on the cell surface which is identified by cytotoxic T cells.

explanation-cytotoxic t cells have specialised tcr proteins on their surface which recgnise virus infected cells.

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