Table 1.

Inhibitory effect of alantolactone on different leukemia cell lines

Cell lines	IC50 (μM)a
	Alantolactone	ADR
K562	2.75 ± 0.64	0.15 ± 0.08
K562/A02	2.73 ± 0.83	8.94 ± 3.79
HL60	3.26 ± 0.88	0.027 ± 0.022
HL60/ADR	3.28 ± 0.80	5.54 ± 1.21
THP-1	2.17 ± 0.72	0.06 ± 0.038
KG1a	2.75 ± 0.65	0.62 ± 0.15
Normal cell	26.37 ± 4.04	N/A

ADR adriamycin, used as a positive control

^aAll values are the mean of three independent experiments