Section Question 4, continued c) Name the cell type of the immune system that would: i bind an antigen floating around in the blood 1i)recognize an antigenic peptide on a MHC Class ll protein displayed by a macrophage iii)recognize an antigenic peptide on a mhc Class I protein displayed by an infected skin cell iv)nonspecifically engulf and digest a variety of pathogens(disease-causing organisms) v) secrete large amounts of antibody in response to an infection. vi)recognize a viral infected body cell and destroy it. I1) Provide long-lived immunity to measles in children immunized against the measles virus by injection of viral proteins d)will an individual who does not express MHC Class II proteins on the surfaces of B cells and macrophages produce a humoral immune response? Explain your answer e) Below is a drawing of a putative human virus pathogen 成士m al protein"Stk E 1)Which viral protein(s)is likely to raise an antibody response in a natural infection? Why? ii)Which viral protein(s) likely trigger a cell-mediated response(killer T cell lines)in a natural infection? Explain your answer 7012fall2003Name:___________________________________ Section:_____ 7.012 fall 2003 6 Question 4, continued c) Name the cell type of the immune system that would: i) bind an antigen floating around in the blood. ii) recognize an antigenic peptide on a MHC Class II protein displayed by a macrophage. iii) recognize an antigenic peptide on a MHC Class I protein displayed by an infected skin cell. iv) nonspecifically engulf and digest a variety of pathogens (disease-causing organisms). v) secrete large amounts of antibody in response to an infection. vi) recognize a viral infected body cell and destroy it. vii) Provide long-lived immunity to measles in children immunized against the measles virus by injection of viral proteins. d) Will an individual who does not express MHC Class II proteins on the surfaces of B cells and macrophages produce a humoral immune response? Explain your answer. e) Below is a drawing of a putative human virus pathogen. viral protein "Nas T" viral protein "Stk E" i) Which viral protein(s) is likely to raise an antibody response in a natural infection? Why? ii) Which viral protein(s) likely trigger a cell-mediated response (killer T cell lines) in a natural infection? Explain your answer