TABLE 3.

IC values of 1 and parent fractions on agr reporter strain fluorescence detection.

Strain ID	agr group	IC	Test agent (µg/mL)
			224C-F2	224C-F2c	224C-F2c-PF42	1	1 (µM)
AH1677	I	IC50	4	8	16	16	31.72
		IC90	ND	ND	32	32	63.45
AH430	II	IC50	8	16	16	16	31.72
		IC90	ND	ND	32	32	63.45
AH1747	III	IC50	2	8	8	16	31.72
		IC90	ND	ND	32	32	63.45
AH1872	IV	IC50	8	16	16	16	31.72
		IC90	ND	ND	32	32	63.45

ND: IC not detected at the concentration range tested (0.25–32 µg/mL).