Expand ELISA. On what principle ELISA test is based? List two ways by which an infection can be detected in this test.

It is Enzyme Linked Immuno- sorbent Assay. This test is used to detect the immune response in the body. It is based on the principle of antigen- antibody interaction.
Infection can be detected by two ways-
  1. By the presence of antigens
  2. By the detection of antibodies that are produced against pathogen.

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Enzyme Linked Immuno Sorbet Assay.
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