1. Tracking human migration patterns through the oral bacterial flora
P.W. Caufield 
Clinical Microbiology and Infection 
Volume 15, Pages (January 2009)
DOI: /j x
Copyright © 2009 European Society of Clinical Infectious Diseases Terms and Conditions

2. FIG. 1
Phylogeny of the cryptic 5.6-kb plasmid from Streptococcus mutans. Strains in red are serotype e and are shown to exhibit a common evolutionary derivation, whereas racial/geographical host and mutacin gene distribution are not correlated with the plasmid's history.
Clinical Microbiology and Infection  , 37-39DOI: ( /j x)
Copyright © 2009 European Society of Clinical Infectious Diseases Terms and Conditions

3. FIG. 2
Phylogenetic tree depicting co-evolutionary histories of Streptococcus mutans and its human host. Clustering and similarity of genotypes of Caucasian strains suggest an Asian ancestor and small founder population.
Clinical Microbiology and Infection  , 37-39DOI: ( /j x)
Copyright © 2009 European Society of Clinical Infectious Diseases Terms and Conditions