An epigenetic change is one that occurs when a microbial cell produces a toxin or an exoenzyme that directly damages host cells.

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An epigenetic change is a heritable change in gene expression that does not involve changes to the underlying DNA sequence. It can be caused by environmental factors, such as toxins or stress, and can affect the behavior of microbial cells as well as the host cells they interact with. However, it does not involve direct damage to host cells by microbial toxins or exoenzymes.

An Epigenetic Change Is One That Occurs When a Microbial