News Finding: ETEC virulence gene regulation in human infections 
Paper Finding: The difference between environmental atmospheres was a major discrepancy between our aerobically grown laboratory comparison and ETEC in infected stool.
News Context: ETEC virulence gene regulation in human infections 
Paper Context: Surprisingly, classical virulence factors were largely down-regulated in stool compared with standard laboratory growth, including cfaD, the cfa operon, and eltAB (Figs. The difference between environmental atmospheres was a major discrepancy between our aerobically grown laboratory comparison and ETEC in infected stool. Despite the in vivo relevance of growth in limited oxygen atmospheres, we found little published research describing ETEC in such conditions.