Table 1. Assessment of cytotoxicity and anti-HSV-2 activity of HM.

Virus	HM (µg/ml)			Acyclovir (µg/ml)
	CC50 a	EC50 b	SIc	CC50 a	EC50 b	SIc
HSV-2G (ATCC 734)	30	1.5 ± 0.1	20.0	130	2.9 ± 0.1	44.8
Clinical Isolate 1		1.7	17.6		3.5	37.1
Clinical Isolate 2		1.5	20.0		3.1	41.9
Clinical Isolate 3		1.1	27.3		5.2	25.0
Clinical Isolate 4		1.6	18.7		4.4	29.5
TK deficient strain		2.8	10.7		>30	-

^aThe 50% cytotoxic concentration (CC₅₀) for Vero cells.

^bConcentration(s) of HM producing 50% inhibition (EC₅₀) of virus-induced cytopathic effect of three separate experiments.

^cSelectivity index (SI) = CC₅₀/EC₅₀