Brock Biology of Microorganisms (15th Edition)
15th Edition
ISBN: 9780134261928
Author: Michael T. Madigan, Kelly S. Bender, Daniel H. Buckley, W. Matthew Sattley, David A. Stahl
Publisher: PEARSON
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Chapter 26.10, Problem 1MQ
Summary Introduction
Natural killer (NK) cells are the part of innate immunity defenses. These cells are specialized to kill viral pathogens and cells infected by viruses. NK cells are lymphocyte-like cells as they are derived from lymphoid precursors. T-cytotoxic cells are lymphocytes or T-cells which are a part of adaptive immunity.
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Identify and compare the targets and the recognitionmechanisms used by T-cytotoxic cells and NK cells.
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Explain the reason that T-cells are so critical in recognizing and destroying virally-infected host cells.
Chapter 26 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 26.1 - What major class of immune cells mediates an...Ch. 26.1 - Prob. 2MQCh. 26.1 - Compare and contrast the major features of innate...Ch. 26.2 - Describe host tissue specificity for pathogens.Ch. 26.2 - Identify physical and chemical barriers to...Ch. 26.2 - What other factors may control the outcome of an...Ch. 26.2 - Identify at least four mechanisms by which a...Ch. 26.3 - Describe the circulation of a leukocyte from the...Ch. 26.3 - What soluble molecules determine whether a...Ch. 26.3 - Cells involved in innate and adaptive immunity...
Ch. 26.4 - How does the development of B, T, and NK cells...Ch. 26.4 - Distinguish between the primary lymphoid organs...Ch. 26.4 - Leukocytes are differentiated white blood cells...Ch. 26.5 - Although technically not part of the immune...Ch. 26.5 - Describe the mechanisms by which circulating...Ch. 26.5 - Pathogens may colonize host tissues when...Ch. 26.6 - Identify a PAMP shared by a group of...Ch. 26.6 - Outline the general features of a signal...Ch. 26.6 - Innate recognition of common pathogens occurs...Ch. 26.7 - Identify the mechanism used by phagocytes to...Ch. 26.7 - Describe several reasons why phagocytes are not...Ch. 26.7 - Phagocytosis is the engulfing of infectious...Ch. 26.8 - Prob. 1MQCh. 26.8 - Identify the major symptoms of localized...Ch. 26.8 - Fever and inflammation, characterized by pain,...Ch. 26.9 - In what ways does the classical pathway of...Ch. 26.9 - What is opsonization, and how does opsonization...Ch. 26.9 - Why are the mannose-binding lectin and alternative...Ch. 26.9 - The complement system is composed of soluble...Ch. 26.10 - Prob. 1MQCh. 26.10 - Prob. 2MQCh. 26.10 - Prob. 1CRCh. 26 - Prob. 1AQCh. 26 - Describe the potential problems that would arise...Ch. 26 - Prob. 3AQCh. 26 - Prob. 4AQ
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- Explain the mechanism by which NK cells are able to engage a highly specific antigen receptor during their activation.arrow_forwardDistinguish between clonal deletion and clonal anergy in B cells.arrow_forwardList the subclasses of T-helper cells and state the type(s) of the pathogen(s) targeted by each?arrow_forward
- Explain the difference between a T-cell-dependent and a T-cellindependentresponse.arrow_forwardCompare and contrast the mechanisms of antigen challenge and the clonal selection processes of B and T cells, including effector cells, helper cells, memory cells, and important cytokines.arrow_forwardName two ways in which the presence of antibodies enhances phagocytosis.arrow_forward
- Compare and contrast the process of antigen recognition in T cells and Barrow_forwardDescribe the requirements for activation of helper T cells by macrophages. Explain how helper T cells promote the immunological defenses provided by cytotoxic T cells and by B cells.arrow_forwardHow is clonal selection related to the vast number of possible B and T-cell receptor binding conformations? Draw a picture to illustrate your explanation.arrow_forward
- List two potentially life-threatening consequences of a Type I hypersensitivity reaction and explain what molecules are involved and how they work.arrow_forwardAdaptive immunity includes both humoral and cell-mediated immune responses, which interact but also have distinct roles in adaptive immunity. Identify the example of a strictly cell-mediated immune response. A. A cytotoxic T cell destroys an infected host cell. B. A helper T cell activates a B cell. C. A B cell gives rise to plasma cells, which release antibodies. D. An antigen is taken in by an antigen-presenting cell.arrow_forward
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