Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Distribution of IS6110 band numbers among the three principal genetic groups based on the analysis of 444 strains obtained from Arkansas between 1 January 1996 and 31 December 2000. x axis, number of the IS6110 hybridizing bands; y axis, proportion of strains in each of the three principal genetic groups by IS6110 copy number. The white bar represents group 1; the black bar represents group 2; and the hatched bar represents group 3.
