Table 1.

MIC₈₀ of the different groups (n = 3).

Groups	Control (alcohol)	Acorus gramineus	Sophora flavescens	Polygonum hydropiper	Cassia obtusifolia	Pulsatilla chinensis	Dandelion	Cortex phellodendri
MIC80 (μg/μl)	128	64	32	64	56	112	0	0.25

Note: MIC₈₀ means comparing with the negative control, the lowest drug concentration with an OD value declining more than 80%.