TABLE 2.

Microarray combinations for expression profile analysis

Expt	Comparison (strain vs strain)a						Observation
	Strain 1	expR status	sin status	Strain 2	expR status	sin status
1	Rm8530	+ expR	− sinI	Rm8530	+ expR	+ sinI	Role of sin-AHLs in the presence of expR
2	Rm11511	− expR	− sinI	Rm1021	− expR	+ sinI	Role of sin-AHLs in the absence of expR
3	Rm11512	− expR	− sinR	Rm1021	− expR	+ sinR	Role of sinR in the absence of expR
4	Rm1021	− expR	+ sinI	Rm8530	+ expR	+ sinI	Role of expR in the presence of sin-AHLs
5	Rm11511	− expR	− sinI	Rm11527	+ expR	− sinI	Role of expR in the absence of sin-AHLs

^aStatus refers to the presence (+) or absence (−) of the indicated gene.