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MCQ immunology

MCQ Immunology: Antibodies

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 […]

Immunology

Cell Mediated Immunity

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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Immunology

Cytokines: Types and Functions

Cytokines are bioactive hormones, normally glycoproteins, which exercise a wide variety of biological effects on those cells which express the appropriate receptors. Cytokines are designated by their cellular origin such that Monokines include those interleukins […]