How does ELISA work in detecting infections caused by pathogens?

How does ELISA work in detecting infections caused by pathogens?
  1. By antigen-antibody interaction
  2. By amplification of nucleic acid
  3. By radioactive tagging of DNA or RNA
  4. By autoradiography

Solution

ELISA is based on the principle of antigen-antibody interaction and can detect infection by pathogen through the presence of antigens or the detection of antibodies synthesized against the pathogen.

Asked in: NCERT

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