Q. For the body to develop immunologic tolerance, production of ____________________ must be prevented.

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Q. Who discovered the vaccination against smallpox?

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Q. A harmless version of tetanus toxin is called _________________

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Q. Which of the following serves as antigen receptors?

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Q. The heavy and light chains of the antibodies are linked to one another by ____________________

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Q. Which is the first antibody secreted by B cells following stimulation by an antigen?

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Q. Which antibody is produced at high levels in response to parasitic functions?

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Q. T-cells are activated by _______________

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Q. The dendritic cells were discovered by _______________

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Q. Each T-cell has a single species of T-cell receptor.

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Q. The activation of T-cell by the dendritic cells is associated with __________________

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Q. Proliferation of T-cells in response to antigen presentation is accompanied by enlargement of __________________

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Q. After the clearance of foreign antigen, the expanded T-cell population ________________

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Q. T-cells secrete antibodies for eradicating the infected cells.

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Q. Cytokines are ________________

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Q. Chemokines act as ___________________

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Q. Perforins and granzymes are secreted by ______________________

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Q. After entering the target cells, the granzymes activate the ______________________

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Q. Cytotoxic T cells are _____________

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Q. Helper T lymphocytes possess ____________ proteins on their surface.

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