Q. Numerous antibodies can be prepared, against one antigen, each binds to unique epitopes. How is this antibody diversity generated?

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Q. Which of the following expresses CD3 surface antigen?

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Q. Polymorphonuclear leukocytes (or PMNs)

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Q. Major Histo Compatibility Complex (MHC) is a collection of genes arrayed on

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Q. CD8 surface antigen is present in

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Q. Treatment with bacterial endotoxins results blast formation in

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Q. Cytotoxic T-cells can be recognized by which of the following cell surface marker?

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Q. Which is not an antigen-presenting cell (or APC)?

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Q. Chemically an antigen may be

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Q. T cell receptors (or TCR) on CD4+ T cells

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Q. Which of the following proteins would not need localization signal?

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Q. Following are the defenses of the colon except

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Q. Natural killer cells are involved in

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Q. Which of the following(s) is/are the determinants of antigenicity?

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Q. Which of the following is correct?

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Q. Immunity is not long lasting to

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Q. Lysozyme is present in

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Q. Macrophages are professional antigen- presenting cells. The protein molecule through which they present antigen in human is

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Q. The role of the M cell is to

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Q. Which of the following statements is false regarding B cells?

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