Name the most commonly used enzymes in ELISA.

Explanation

**Step-by-Step Solution:**

1. **Understanding ELISA**: ELISA stands for Enzyme-Linked Immunosorbent Assay. It is a biochemical technique used to detect the presence of antibodies or antigens in a sample, which makes it useful for diagnosing various diseases.

2. **Principle of ELISA**: The ELISA test is based on the interaction between antigens and antibodies. When an antigen binds to its specific antibody, it leads to a detectable change, often in the form of a color change.

3. **Role of Enzymes**: In ELISA, enzymes are used as probes that facilitate the detection of the antigen-antibody interaction. These enzymes react with specific substrates to produce a colored compound, which can be quantitatively or qualitatively measured.

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