Abstract
Despite progress in mouse models of bacterial pathogens, studies are often limited by evaluating infections in an individual organ or tissue or at a given time. Here we present a technique to engineer the pathogen, e.g., Brucella melitensis, with a bioluminescent marker permitting analysis of living bacteria in real time during the infectious process from acute to chronic infection. Using this bioluminescent approach, tissue preference, differences between virulent and mutant bacteria, as well as the response of the bacteria to host metabolites can provide extraordinary data enhancing our understanding of host-pathogen interactions.
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