You are a good scientist, meaning that you did control samples as well. Control samples are pork food product not inoculated with anything and still held under the same temperature and time conditions. You were expecting that no growth would be found in these samples. However, you found that 10% of the samples contained some growth. Looking at the data, you find that the only bacterium these samples are contaminated with is Clostridium perfringens. What is unique about this bacterium compared to the others used in this experiment that would explain this result
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