QUESTION 44 Which of the following destroys virus-infected cells? TC TR TH o Den

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QUESTION 44 Which of the following destroys virus-infected cells? TC TR TH o Dendritic cells None of the above QUESTION 45 Which one of the following causes perforations or trans-membrane channels in target cells? Antigen Cytokines IL-2 Perforin QUESTION 46 Chemical signals sent between leukocytes are TCRs Interferons oInterleukins Tumor necrosis factor. Colony-stimulating factor QUESTION 47 All of the following are true about natural killer cells except They destroy virus-infected cells oThey destroy tumor cells oThey destroy cells lacking MHC I. They always are stimulated by an antigen None of the above QUESTION 48 A vaccine against HIV proteins made by vaccinia virus is a(n) Conjugated vaccine oSubunit vaccine Nucleic acid vaccine Inactivated whole-agent vaccine Toxoid vaccine QUESTION 49 Inactivated tetanus toxin is a(n) o Conjugated vaccine Subunit vaccine Nucleic acid vaccine o Inactivated whole-agent vaccine Toxoid vaccine

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QUESTION 44 Which of the following destroys virus-infected cells? TC TR TH o Den

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