31. Complement component C3 is cleaved by: A. C3b B. C3bBb C. Factor B D. Factor D E. Factor H 32. The membrane attack complex in the complement pathway consists of: A. C3b3b,Bb B. C5b,6,7,8,9 […]
1. Monoclonal antibodies are produced by A) hybridomas. B) lymphocytes. C) myeloma cells. D) plasma cells. 2. Opsonization refers to A) adherence to mucosal epithelial cells. B) antibody mediated viral inactivation. C) coating of […]
1. Specific immunity can be acquired either naturally or artificially and involves A) All of the below. B) antibodies. C) antigens. D) the classical complement pathway. 2. Which DOES NOT provide long term immunity? A) […]
Whenever we got ill, our body fights with those disease causing germs and try to make us feel better. The fight between the disease causing germs and our body system is very complex. Both the […]
This is the collection of some multiple choice questions to check your understanding about immunology; definitions, terms, concepts etc. At the end of this immunology MCQ, i have posted the answers also. I expect persons who […]
When the specific antibodies (agglutinins) bind to surface antigens of bacteria/virus or any antigens immobilized in particulate matter (such as latex particle) and cause the formation of a visible clumps, such test is called agglutination test. […]
The principle of Counter Immunoelectrophoresis method is that at pH 8.4 the immunoglobulins will migrate to the negative end of a capillary system if an electric field has been applied to the capillary system. In […]
Enzyme-linked immunosorbent assay (ELISA) is extremely sensitive test that is used to detect specific antibodies or antigens. The direct ELISA is a test for the detection of antigen using specific immobilized antibody. In this procedure, […]
Enzyme-linked immunosorbent assay (ELISA) test is the most widely used type of immunoassay. ELISA is a rapid test used for detecting or quantifying antibody (Ab) against viruses, bacteria and other materials or antigen (Ag). ELISA is so named […]
Which of the following antibody is an important host defense against encapsulated bacteria? a. IgG1 b. IgG2 c. IgG3 d. IgG4 Which of the following immunoglobulin is the most abundant immunoglobulin in newborns? a. IgA […]
A firm diagnosis of kala-azar/ visceral leishmaniasis (VL) requires demonstration of the parasite in splenic or bone marrow aspirate. But getting biopsy sample is an invasive test so different antigen/antibody detection methods are in use […]
CELL-MEDIATED IMMUNITY: Antibody-independent immunity, mediated by TH1 cells. Examples: Type-IV Hypersensitivity responses, responses against Mycobacterium tuberculosis and other intracellular pathogens. MACROPHAGE ACTIVATION: IFN-gamma, secreted by TH1 cells, activates macrophages. Increase expression of MHC-II molecules in […]
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