Table 1.

Genetic characteristics of P. acnes phylogroups

Genetic Grouping	P-distance (core SNPs)			ds*	Percentage unique core region SNPs
	Type I	Type II	Type III
Type I	–	0.444	0.487	0.006±0.001	26
Type II	0.444	–	0.470	0.005±0.001	22
Type III	0.487	0.470	–	0.002±0.001	24
Type I, II, III	–	–	–	0.024±0.003	–

*Based on the analysis of concatenated MLSA₈ sequence data using the Nei–Gojobori method (Jukes–Cantor) in mega v5.0.