The polymerase chain reaction (PCR)can detect as few as 10 toxin-producing Escherichia coli in a population of 100,000 microorganisms isolated from soft cheese samples.

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PCR is a highly sensitive molecular technique that can detect even small amounts of a specific pathogen in a complex mixture of microorganisms. It is capable of detecting as few as 10 bacteria in a sample, making it a powerful tool for food safety testing. Therefore, it is true that PCR can detect as few as 10 toxin-producing Escherichia coli in a population of 100,000 microorganisms isolated from soft cheese samples.

The Polymerase Chain Reaction (PCR)can Detect as Few as 10