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  1. ELISA is used to detect viruses, where
    1. DNA-probes are required
    2. Southern bloting is done
    3. Alkaline phosphatase is the key reagent
    4. Catalase is the key reagent
Correct Option: C

ELISA test is a technique used to detect and quantitate extremely small amount of a protein, antibody or antigen with the help of enzyme. The commonly used enzymes are peroxidase and alkaline phosphatase. Southern blotting and DNA probes are used in molecular analysis of DNA. Catalase is not involved in ELISA.


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