EBK MICROBIOLOGY
12th Edition
ISBN: 8220100659720
Author: CASE
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 5R
Explain the effects of excess antigen and antibody on the precipitation reaction. How is the precipitin ring test different from an immunodiffusion test?
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Chapter 18 Solutions
EBK MICROBIOLOGY
Ch. 18 - Which could cause the disease it is supposed to...Ch. 18 - Define the following terms, and give an example of...Ch. 18 - DRAW IT Label the components of the direct and...Ch. 18 - How are monoclonal antibodies produced? What is...Ch. 18 - Explain the effects of excess antigen and antibody...Ch. 18 - Prob. 6RCh. 18 - How does the antigen in an agglutination reaction...Ch. 18 - Match the following serological tests in column A...Ch. 18 - Prob. 9RCh. 18 - Prob. 10R
Ch. 18 - Prob. 1MCQCh. 18 - Prob. 2MCQCh. 18 - Prob. 3MCQCh. 18 - Prob. 4MCQCh. 18 - Prob. 5MCQCh. 18 - Prob. 6MCQCh. 18 - Prob. 7MCQCh. 18 - Test used to identify rabies virus in the brain of...Ch. 18 - Prob. 9MCQCh. 18 - Prob. 10MCQCh. 18 - What problems are associated with the use of live...Ch. 18 - Prob. 2ACh. 18 - Prob. 3ACh. 18 - Which of the following is proof of a disease...Ch. 18 - Prob. 2CAECh. 18 - Prob. 3CAECh. 18 - Prob. 4CAE
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- Give the full form of ELISA.which disease can be detected using it?Discuss the principle underlying the test.arrow_forwardWhen a patient exhibits a four-fold or greater rise in antibody titer against a specific microbial antigen between acute-phase and convalescent-phase serum samples, this is considered to be a “seroconversion”. Which of the following would be a correct interpretation of a seroconversion? what option below is the answer? None of the other four answers are a correct interpretation of a seroconversion These results show that the microbe itself has been detected in the patient’s sample(s) These findings cannot be interpreted because antibodies aren’t specific enough for antigens There is no evidence of current active infection because that would require that the antibody titer is decreasing rather than increasing The results show evidence of current or recent infection by the specific microbe because there has been an active immunologic response to its antigenarrow_forwardLabel the immunohistochemistry-negative specimen to identify what tissue is present. Evaluate the distribution of cytokeratin staining and the quality (color, background and intensity).arrow_forward
- write down the following techniques of immunology and thier applications; 1.precipitation 2.agglutination 3. simple immunodiffusion 4. double immunodiffusion 5.immunoelectrophoresis 6. two dimensial and counter immnuoelectrophoresis 7.immunofluorescence 8.complement fixationarrow_forwardA patient is O positive and his serum is agglutinating all screening and panel reagent cells at room temperature. His autocontrol is positive at room temperature also. The patient may have an antibody to a high incidence antigen. One possibility is that he may have a clinically insignificant autoanti-I. How could you prove that the patient has an anti-I antibody?arrow_forwardDifferentiate between the serological tests used to identify isolatedcultures of pathogens and those used to diagnose disease frompatients’ serum as shown in figure .arrow_forward
- what is the tuberculin test, and why is it used in clinics?arrow_forwardDescribe the mechanism of an Indirect ELISA. Why is ELISA so sensitive? Why is it necessary to block unoccupied binding sites in the microtiter wells? Why is it important to have a positive control?arrow_forwardWhat component must have been present in the positive control solution (antigen, anti-HIV IgG antibodies, or secondary antibody)? Explain how you know this is true.arrow_forward
- The TB skin test is usually negative in AIDS patients. Why?arrow_forwardA negative result with MPO stain would be seen with what cell type? Question 5 options: A) neutrophils B) lymphocytes C) eosinophils D) basophilsarrow_forwardIn which test the Ag is soluble? DAgglutination 2)Flocculation Hemagglutination Precipitationarrow_forward
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