. Author manuscript; available in PMC: 2008 Feb 26.

Published in final edited form as: J Dent Res. 2006 Apr;85(4):369–373. doi: 10.1177/154405910608500417

Table.

Strains Studied

Strains Used in This Study	Gene Defect	Progenitor	Phenotype	References
NCTC-10449S	Unknown	--	Known virulent, st^r^*, X^s	Tanzer, 1979; Tanzer et al., 1985b
UA159	Unknown	--	Known virulent, no antibiotic resistance, X^s	Ajdic et al., 2002
TW17	fruI⁻	UA159	Unknown virulence, em^r, X^r	Wen et al., 2001
TW18	fruCD⁻	UA159	Unknown virulence, tc^r, X^s	Wen et al., 2001
TW20	fruCD⁻/fruI⁻	TW18	Unknown virulence, tc^r/em^r, X^r	Wen et al., 2001
TW19	gtfA⁻	UA159	Unknown virulence, km^r, X^s	Wen and Burne, 2001

st^r, spontaneously streptomycin-resistant; em^r, erythromycin-resistant; tc^r, tetracycline-resistant; km^r, kanamycin-resistant; X^s, sensitive to inhibition of metabolism and growth by xylitol; X^r, resistant to inhibition of metabolism and growth by xylitol.