The genotypic diversity of oral Actinomyces naeslundii of root caries in aged people
GUO Bin1,2, YANG Fan3, JIA Yue1, XIA Qian1, ZHOU Xue -dong1
West China Journal of Stomatology . 2010, (06): 646 -648 .  DOI: 10.3969/j.issn.1000-1182.2010.06.019