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B
Tetanus
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C
AIDS
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D
Tuberculosis
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Solution
The correct option is C AIDS
The enzyme-linked immunosorbent assay (ELISA) is a commonly used analytical biochemistry assay in the diagnosis of AIDS (acquired immunodeficiency syndrome). ELISA can be performed to evaluate either the presence of antigen or the presence of antibody in a sample, it is a useful tool for determining serum antibody concentrations in HIV test.
In ELISA, antigens from the sample are attached to a surface. Then, a matching antibody is applied over the surface so it can bind to the antigen. This antibody is linked to an enzyme, and in the final step, a substance containing the enzyme's substrate is added. The subsequent reaction produces a detectable signal, most commonly a colour change in the substrate.