Microbiology With Diseases By Taxonomy (6th Edition)
6th Edition
ISBN: 9780134832302
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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Chapter 18, Problem 4CT
Summary Introduction
To explain:
The reason why the people with B cell defects acquire numerous bacterial infections, whereas those with T cell defects get viral diseases.
Introduction:
The immune system can divide foreign substances into two groups. One group involves antigens which can circulate freely in the body. Some molecules, viruses and foreign cells can be involved in this group.
Second group involves self cells, which show aberrant MHC proteins. MHC proteins are originated from exogenous antigen that have been broken down or engulfed or are virus infected and cancer cells which can produce foreign proteins actively.
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Explain why the B cells response is described as “humoral”, but the T cell’s response is described as “cell-mediated”?
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Chapter 18 Solutions
Microbiology With Diseases By Taxonomy (6th Edition)
Ch. 18 - Prob. 1TMWCh. 18 - Prob. 2TMWCh. 18 - Prob. 3TMWCh. 18 - Prob. 1CCSCh. 18 - Prob. 1MCCh. 18 - Prob. 2MCCh. 18 - Prob. 3MCCh. 18 - Prob. 5MCCh. 18 - Prob. 6MCCh. 18 - Prob. 7MC
Ch. 18 - Prob. 8MCCh. 18 - Prob. 9MCCh. 18 - Prob. 10MCCh. 18 - Prob. 1MTFCh. 18 - Prob. 2MTFCh. 18 - Prob. 3MTFCh. 18 - Prob. 4MTFCh. 18 - Prob. 5MTFCh. 18 - Prob. 1SACh. 18 - Prob. 2SACh. 18 - Prob. 3SACh. 18 - Prob. 4SACh. 18 - Prob. 5SACh. 18 - Prob. 1VICh. 18 - Prob. 2VICh. 18 - What possible advantages might an individual gain...Ch. 18 - Why cant physicians use skin tests similar to the...Ch. 18 - Prob. 3CTCh. 18 - Prob. 4CTCh. 18 - What types of illnesses cause death in patients...Ch. 18 - Prob. 6CTCh. 18 - Prob. 7CTCh. 18 - Prob. 8CTCh. 18 - A 43-year-old woman has been diagnosed with...
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- Distinguish between a. neutrophil and macrophage b. cytotoxic T cell and natural killer cell c. effector cell and memory cell d. antigen and antibodyarrow_forwardWhat is the difference between an allergy and an autoimmune response?arrow_forwardDescribe a mechanism by which an antigen can enter the lymph node and make contact with the B-cell receptor.arrow_forward
- Mention the site in the body where the B-cells and T-cells are formed. Give one difference between them.arrow_forwardAccording to the clonal selection theory, all immunoglobulin molecules in an individual B cell have the same antigenic specificity. Explain why the presence of IgM and IgD on the same B cell does not violate the nonspecificity implied by clonal selection.arrow_forwardExplain the reason that T-cells are so critical in recognizing and destroying virally-infected host cells.arrow_forward
- Describe 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_forwardMany cells in the human body have proteins on the surface that are able to interact with the receptors of helper T cells. Explain the mechanisms and why it is that such an interaction or signal does not usually result in an autoimmune reaction?arrow_forwardDescribe in detail what is meant by a "self- restricted/ self-tolerant" T cell. A diagram is helpful here.arrow_forward
- Which of the following is not a characteristic of memory B cells a.) Secretion of a large amount of antibodies b.) Long life up to decades c.) Having specific immunity against T-independent antigens d.) Requiring helper T Cell activationarrow_forwardSketch a B cell antigen receptor. Label the V and C regions of the light and heavy chains. Label the antigenbinding sites, disulfide bridges, and transmembrane region. Where are these features located relative to the V and C regions?arrow_forwardA ‘B’ lymphocyte demonstrates ‘B cell receptors’ on its surface. These receptors have ‘variable’ regions which match the variable regions of the antibodies released by the plasma cell (formed by the activated B lymphocyte). Which of the following types of antibodies forms these ‘B cell receptors’ ? IgG IgA IgD IgEarrow_forward
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