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Immunology Test Bank Exam Questions & Answers, Rated 100%

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Immunology Test Bank Exam Questions & Answers, Rated 100%-The germinal centers found in the cortical region of lymph nodes and the peripheral region of splenic periarteriolar lymphatic tissue: - conta... ins large populations of B lymphocytes and plasma cells Balance between TH1 and TH2 cell activation determines outcome of intracellular infections. Thus, in case of Mycobacterium leprae infection: - tuberculoid leprosy will occur in patients with a prominent TH1 response The initiation of T cell responses requires multiple receptors on the T cells recognizing ligands on APCs. The MHC molecule located around the peptide-binding cleft is recognized by the: - CD4 or CD8 molecules The edema occurring in the inflammatory process is the result of all the following factors EXCEPT: - neural impulse by the sympathetic system and vasoconstriction Toll-Like Receptors (TLR): - recognize pathogen-associated molecular patterns (PAMPs) on selective microorganisms The initiation of T cell responses requires multiple receptors on the T cells recognizing ligands on APCs. The T cell receptor transduction molecule(s) is(are) conducted by: - CD3 and ζ molecules Which of the following is considered a primary lymphoid organ? - thymus Immediate activation of the B lymphocytes following contact with the antigen involves all of the following molecules EXCEPT: - MHC class II molecules Immunologic memory refers to: - changes in adaptive immune responses with subsequent encounters with antigen Both, naive mature effector T lymphocytes migrate differently in their lives. Naive T cells express which adhesion molecule to mediate their migration into lymph nodes through specialized vessels called high endothelial venues (HEVs)? - L-selectin The main consequences of complement activation are all of the following EXCEPT: - producing 2nd signal for macrophage activation 'Langerhans Cells' which play a role in the immune system are: - dendritic cells located mainly in the epidermis All of the following cells results in the germinal center reaction of the follicles (B lymphocyte zone) EXCEPT: - short-lived plasma cells The antigen recognition on the T cells is mediated by: - the Variable (v) regions of α and β chains The T-cell receptor: - recognizes antigen fragments via the α and β chains [Show More]

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