Table 2.

MTT assay of doxorubicin and longifolene on SCC-29B.

SCC-29B
Test Sample	Concentration (µg/mL)	Optical Density at 590 nm	% Inhibition	IC50 Value (µg/mL)
Control	0	0.521	0.00	0
Doxorubicin	1.7	0.423	18.81	9.56
	3.4	0.336	35.51
	6.8	0.284	45.49
	13.6	0.206	60.46
	27.16	0.146	71.98
	54.32	0.067	87.14
Longifolene	10	0.468	10.17	88.92
	20	0.417	19.96
	40	0.346	33.59
	80	0.275	47.22
	160	0.198	62.00
	320	0.109	79.08