Global Transcriptional Response to Spermine, a Component of the Intramacrophage Environment, Reveals Regulation of Francisella Gene Expression through Insertion Sequence Elements. - Carlson Jr., Paul E.; Horzempa, Joseph; O'Dee, Dawn M.; Robinson, Cory M.; Neophytou, Panayiotis; Labrinidis, Alexandros; Nau, Gerard J. (Journal of Bacteriology, 2009)