Domanda del libro di testo
A purified protein from Mycobacterium tuberculosis is injected into a person’s skin. A hardened, red area develops around the injection site within 3 days.
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Ch. 18 - Practical Applications of Immunology
Tortora14th EditionMicrobiology: An IntroductionISBN: 9780138200398
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TOC.tableOfContents
- Ch. 1 - The Microbial World and You18
- Ch. 2 - Chemical Principles20
- Ch. 3 - Observing Microorganisms Through a Microscope18
- Ch. 7 - The Control of Microbial Growth20
- Ch. 9 - Biotechnology & DNA Technology20
- Ch. 10 - Classification of Microorganisms15
- Ch. 11 - The Prokaryotes: Domains Bacteria and Archaea14
- Ch. 12 - The Eukaryotes: Fungi, Algae, Protozoa, and Helminths17
- Ch. 13 - Viruses, Viroids, and Prions20
- Ch. 14 - Principles of Disease and Epidemiology21
- Ch. 15 - Microbial Mechanisms of Pathogenicity19
- Ch. 16 - Innate Immunity: Nonspecific Defenses of the Host20
- Ch. 17 - Adaptive Immunity: Specific Defenses of the Host20
- Ch. 18 - Practical Applications of Immunology20
- Ch. 19 - Disorders Associated with the Immune System19
- Ch. 20 - Antimicrobial Drugs19
- Ch. 21 - Microbial Diseases of the Skin and Eyes21
- Ch. 22 - Microbial Diseases of the Nervous System19
- Ch. 23 - Microbial Diseases of the Cardiovascular and Lymphatic Systems20
- Ch. 24 - Microbial Diseases of the Respiratory System20
- Ch. 25 - Microbial Diseases of the Digestive System20
- Ch. 26 - Microbial Diseases of the Urinary and Reproductive Systems19
- Ch. 27 - Environmental Microbiology20
- Ch. 28 - Applied and Industrial Microbiology19
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Capitolo 14, Problema 9
Test used to detect the presence of antibodies in a patient’s serum.
a. Direct fluorescent antibody
b. Indirect fluorescent antibody
c. Rabies immune globulin
d. Killed rabies virus
e. None of the above
Guida verificata passo dopo passo1
Understand the purpose of the test: it is designed to detect antibodies present in a patient's serum, which means we are looking for a method that identifies antibodies rather than antigens or providing treatment.
Review the options given: options a and b involve fluorescent antibody techniques, option c is a treatment (immune globulin), option d is a vaccine (killed virus), and option e is none of the above.
Recall that a direct fluorescent antibody test uses fluorescently labeled antibodies that bind directly to antigens in a sample, so it detects antigens, not antibodies.
Recall that an indirect fluorescent antibody test uses an unlabeled primary antibody from the patient’s serum that binds to the antigen, followed by a fluorescently labeled secondary antibody that binds to the primary antibody, thus detecting antibodies in the serum.
Conclude that the test used to detect antibodies in a patient’s serum corresponds to the indirect fluorescent antibody technique (option b).
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Antibody Detection Methods
Antibody detection methods identify specific antibodies in a patient's serum to diagnose infections or immune status. Techniques like direct and indirect fluorescent antibody tests use labeled antibodies to visualize antigen-antibody reactions, helping detect immune responses.
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Mutant Detection
Direct Fluorescent Antibody (DFA) Test
The DFA test uses fluorescently labeled antibodies that bind directly to antigens in a sample. It detects the presence of specific pathogens by visualizing fluorescence under a microscope, but it does not detect antibodies in serum.
Video consigliato:
06:59The Ames Test
Indirect Fluorescent Antibody (IFA) Test
The IFA test detects antibodies in a patient's serum by using an unlabeled antigen and a fluorescently labeled secondary antibody that binds to the patient's antibodies. This method is commonly used to confirm exposure or immune response to infections.
Video consigliato:
06:59The Ames Test
Pratica correlata
Domanda del libro di testo
In an agglutination test, eight serial dilutions to determine antibody titer were set up: Tube 1 contained a 1:2 dilution; tube 2, a 1:4, and so on. If tube 5 is the last tube showing agglutination, what is the antibody titer?
a. 5
b. 1:5
c. 32
d. 1:32
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Domanda del libro di testo
Test used to identify rabies virus in the brain of a dog.
a. Direct fluorescent antibody
b. Indirect fluorescent antibody
c. Rabies immune globulin
d. Killed rabies virus
e. None of the above
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Domanda del libro di testo
Match the following serological tests in column A to the descriptions in column B.
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Domanda del libro di testo
Match each of the following tests in column A to its positive reaction in column B.
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Domanda del libro di testo
How does the antigen in an agglutination reaction differ from that in a precipitation reaction?
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