Researchers have identified the DNA-binding protein Fis as a novel molecular monitor that suppresses the expression of virulence genes in the diarrheal pathogen Yersinia pseudotuberculosis at cooler, environmental temperatures.
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https://www.sflorg.com/2026/04/mb04022601.html
New Virulence Regulator of Diarrhea Pathogen Discovered

Pathogenic bacteria often delay the activation of their virulence program until they are inside the host