4. What best explains how PCR can be used to detect an infection?Specific temperatures are...

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4. What best explains how PCR can be used to detect an infection?Specific temperatures are used to amplify DNA from an infectious agent if it was present in the patient.Specific restriction enzymes are used to cut the DNA from an infectious agent if it was present in the patient. That fragment can then be seen on a gel.Specific primers are used that would result in the amplification of DNA from an infectious agent if it was present in the patient. That amplification can be seen with the presence of a specific size fragment when the PCR product is ran on a gel.

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