SCMED2020 Immunorogy 28 ch of the following statements about TCR genes is CoRR T
ID: 3479968 • Letter: S
Question
SCMED2020 Immunorogy 28 ch of the following statements about TCR genes is CoRR The orga ECT? A. nisation of TCR genes is similar to that of the MHC genes R beta-chain is encoded by a gene that contains Variable, Diversity and Joining segments that can be rearrange genes undergo somatic hypermutation in germinal centres D. The TC R alpha-chain genes are always rearranged before the beta- chain genes Which of the following processes does NOT increase overall TCR diversity in the peripheral T cell pool? A. Random recombination of Variable, Diversity and Joining gene B. Removal of nucleotides by exonucleases segments C. Positive selection D. Addition of N-nucleotides and P-nucleotides 27. Which of the following statement about memory T cells is INCORRECT? A. B. C. D. Memory T cells develop a higher affinity for antigen with each antigen encounter Memory T cells provide improved immunity against viruses that have been previously encountered Memory T cells are generated during normal T cell responses Memory T cells would normally make up a higher proportion of the T cell pool in adults than in infants. Which of the following statements does not describe a known activity of T regulatory cells (eg FOXP3+ T regs)? A. Regulatory T cells can help prevent autoimmunity. B. Regulatory T cells can inhibit anti-tumour immunity. C. Regulatory T cells can inhibit T cell development in the thymus D. Regulatory T cells are important contributors to oral/mucosal tolerance. 28.Explanation / Answer
25) The statements AboutvTCR genes correct in A,B,D statements.
26) The statements A and D are correct.
27) The statementsA and B are incorrect
28) D statement does not describes the known activity of T cells
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