TABLE 2.

Adhesion force sensitivity of different genes over the entire height of 5- and 24-h S. mutans UA159 and UA159 ΔluxS biofilms^a

Gene	S. mutans UA159				S. mutans UA159 ΔluxS
	Adhesion force sensitivity (nN−1)		R2		Adhesion force sensitivity (nN−1)		R2
	5 h	24 h	5 h	24 h	5 h	24 h	5 h	24 h
ftf			0.3	0.4			<0.1	0.4
gtfB			0.1	0.5			0.3	0.1
brpA	1.6		0.96	<0.1			0.6	0.2
comDE	0.2		0.7	0.2			0.1	0.2
vicR			0.3	0.1			<0.1	0.2
gbpB	0.1		0.7	0.1			0.6	0.2
relA			0.3	<0.1			0.3	<0.1

^aLinear relationships between gene expression and stationary adhesion force with a correlation coefficient of less than 0.7 were considered insignificant, and no sensitivity values were derived. Data in boldface are considered significant.