New research from scientists at the Lewis Katz School of Medicine at Temple University shows that the repression of curli by an environmental factor in the intestine plays a critical role in freeing Salmonella bacteria of strain S. Typhimurium from their biofilms, enabling them to cause active infection. The environmental cue is nitrate. The new findings, led by senior investigator on the study Çagla Tükel, PhD, Director of the Center for Microbiology and Immunology at the Katz School of Medicine, were described online in the journal mBio. ScienceDaily highlighted the research.