Table 3.

MTT assay of doxorubicin and longifolene on Vero cell line.

Vero
Test Sample	Concentration (µg/mL)	Optical Density at 590 nm	% Inhibition	IC50 Value (µg/mL)
Control	0	0.498	0.00	0
Doxorubicin	1.7	0.467	6.22	29.12
	3.4	0.429	13.86
	6.8	0.389	21.89
	13.6	0.352	29.32
	27.16	0.260	47.79
	54.32	0.189	62.05
Longifolene	10	0.486	2.41	246.3
	20	0.456	8.43
	40	0.410	17.67
	80	0.369	25.90
	160	0.320	35.74
	320	0.213	57.23