Fig. 3From: Expansion of a urethritis-associated Neisseria meningitidis clade in the United States with concurrent acquisition of N. gonorrhoeae allelesGonococcal DNA content of U.S. NmNG urethritis clade isolates and closely related invasive isolates. Sequence change is measured relative to M21273 and plotted with respect to the date of isolation. Isolates collected before 2012 are not part of the U.S. NmNG urethritis cladeBack to article page