Fig. 4From: Genomic analysis of Listeria monocytogenes from US food processing environments reveals a high prevalence of QAC efflux genes but limited evidence of their contribution to environmental persistenceThe isolates from mixed and seafood facilities more often contained a QAC tolerance gene compared to other food facility types. Each band on the intensity map represents an individual facility (n = 281) that had at least 5 isolates in its collection historyBack to article page