Q. Which of the following provide specific defense against viruses and bacteria?

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Q. Which of these is a type of specific defense against pathogens?

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Q. In animals, blood clots serve the function of

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Q. What is the result of invasion of a body by pathogens?

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Q. What is the behavior in which T cells and B cells constantly travel throughout the body seeking out and destroying foreign substances?

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Q. In a fetus, where are lymphocytes produced?

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Q. Which of the following produces the antibodies employed in the specific immune response of vertebrates?

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Q. Which of the following is not part of the vertebrate immune system?

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Q. The protein, produced by B cells that binds to a specific antigen is

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Q. Which of the following characteristics are common in lymphocytes, macrophages, and neutrophils?

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Q. Which of the following blood proteins can destroy pathogens?

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Q. Which of these is part of the lymphoid system in humans?

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Q. What type of B cell is like a tiny factory that produces antibodies identical to the B cell receptor that bind to the original antigen?

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Q. Lack of reaction to our own human leukocyte antigens (HLAs) is known as?

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Q. Which of the following components of the vertebrate immune response occurs first upon invasion by a virus or bacterium?

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Q. Which of the following white blood cells act as scavengers when they engulf and digest pathogens?

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Q. A cell which defends against body cells in which viruses are reproducing is

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Q. Which of the following is most likely to produce anaphylaxis in a susceptible individual?

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Q. Which of those immunoglobulin classes is mainly found in external secretions?

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Q. Cleavage of an IgG molecule by a specific protease can produce

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