Table 2.

F. nucleatum Subspecies Identified in Intra-uterine Infection

		Fn Subspecies Identified*	Source**	References
Cultivated strains	YWH7052	F. nucleatum ss. animalis	PTB AF	Han et al., 2004
	YWH7055	F. nucleatum ss. animalis	PTB AF	Han et al., 2004
	YWH7053	F. nucleatum ss. animalis	PTB placentas	Han et al., 2004
	YWH7056	F. nucleatum ss. animalis	PTB placentas	Han et al., 2004
	YWH7199	F. nucleatum ss. animalis	Stillbirth placenta	Han et al., 2010
Accession numbers	EU644455	F. nucleatum ss. animalis	PTB AF	Han et al., 2009
	EU644461	F. nucleatum ss. animalis	PTB AF	Han et al., 2009
	EU644463	F. nucleatum ss. animalis	PTB AF	Han et al., 2009
	EU644464	F. nucleatum ss. animalis	PTB AF	Han et al., 2009
	EU644466	F. nucleatum ss. animalis	PTB AF	Han et al., 2009
	EU644478	F. nucleatum ss. animalis	PTB AF	Han et al., 2009
	EU644480	F. nucleatum ss. animalis	PTB AF	Han et al., 2009
	JN546083	F. nucleatum ss. animalis	PTB AF (with EONS)	Wang et al., 2013
	JN546084	F. nucleatum ss. animalis	PTB AF	Wang et al., 2013
	JN584646	F. nucleatum ss. polymorphum	PTB AF	Wang et al., 2013
	JN546087	F. nucleatum ss. animalis	PTB AF	Wang et al., 2013
	JQ901488	F. nucleatum ss. animalis	PTB CB (with EONS)	Wang et al., 2013
	JN546096	F. nucleatum ss. animalis	PTB CB	Wang et al., 2013
	JN546097	F. nucleatum ss. animalis	PTB CB	Wang et al., 2013
	JN546100	F. nucleatum ss. animalis	PTB CB	Wang et al., 2013
	N/A	F. nucleatum ss. polymorphum	neonatal gastric aspirates	Gonzales-Marin et al., 2013

^*Those with accession numbers were detected by PCR and clone analysis. Species and subspecies identification was performed based on the full-length 16S rRNA gene sequences from the Human Oral Microbiome Database (HOMD). ss, subspecies.

^**AF, amniotic fluid; PTB, preterm birth; EONS, early-onset neonatal sepsis; CB, cord blood.