Table 1.

Genetic variation of partial nanH sequences of type and reference strains and clinical isolates of Actinomyces oris and Actinomyces naeslundii

	A. naeslundii (n =30)	A. oris (n =74)
G+C content	0.687	0.693
No. of segregating sites, S	147	319
No. of discrete sequences	29	71
dN/dS	0.2134	0.1466
π	0.0210	0.0296
θ	0.0361	0.0728
Tajima's D	−1.6094	−2.0658*
Fu and Li's D*	−1.9615	−3.6456**
Fu and Li's F*	−1.6815	−3.5907**

π and θ, nucleotide diversity.

All analyses were performed using dnasp version 4.5 (http://www.ub.es/dnasp/index.html/).

^*P <0.05;

^**P <0.02.