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Stream: BMLT, 3rd Year
Subject: VIROLOGY, MYCOLOGY AND APPLIED MICROBIOLOGY
Topic: Explain the short note about western blotting technique ?
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Ans: Western blotting, also known as immunoblotting, is a powerful laboratory technique used to detect and analyze specific proteins in a sample. It involves several key steps:

1. Protein Separation: Proteins from the sample are separated based on their size using gel electrophoresis, typically SDS-PAGE.

2. Protein Transfer: The separated proteins are transferred from the gel to a solid membrane, such as nitrocellulose or PVDF.

3. Blocking: The membrane is treated with a blocking agent to prevent non-specific binding and reduce background noise.

4. Primary Antibody Incubation: The membrane is incubated with a primary antibody that recognizes the target protein.

5. Washing: The membrane is washed to remove unbound or non-specifically bound antibodies.

6. Secondary Antibody Incubation: The membrane is incubated with a secondary antibody that binds to the primary antibody.

7. Washing: The membrane is washed again to remove unbound secondary antibodies.

8. Detection: The presence of the target protein is visualized using a detectable marker conjugated to the secondary antibody. This can be done through chemiluminescence or fluorescence.

9. Analysis: The Western blot image is captured and analyzed to determine the abundance of the target protein.

Western blotting is widely used in various research fields and clinical diagnostics.

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