Table 1.

MTT assay of doxorubicin and longifolene on DU-145.

DU-145
Test Sample	Concentration (µg/mL)	Optical Density at 590 nm	% Inhibition	IC50 (µg/mL)
Control	0	0.656	0.00
Doxorubicin	1.7	0.523	20.27	10.67
	3.4	0.413	37.04
	6.8	0.365	44.36
	13.6	0.241	63.26
	27.16	0.168	74.39
	54.32	0.069	89.48
Longifolene	10	0.578	11.89	78.64
	20	0.501	23.63
	40	0.423	35.52
	80	0.306	53.35
	160	0.227	65.40
	320	0.109	83.38