Which of the following is not considered an antigen-presenting cell?
AMacrophages
BLangerhans cells
CThymocytes
DB lymphocytes
Which of the following statements about the secondary immune response is false?
AThe lag period is absent or significantly shorter.
BThere is a negative phase in the response.
COnly T-dependent antigens are recognized.
DImmune response against a subsequent antigenic challenge is absent.
What is the primary mechanism by which cytotoxic T lymphocytes (CTLs) recognize target cells in the immune response?
AAre important in the control of viral infections
BRecognize antigens presented by MHC class I molecules
CSecrete cytokines that stimulate the differentiation and proliferation of T cells
DMost often recognize antigens presented by MHC class II molecules
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