Table 1.

Results of Caspase 3 activity assay (x(-) ± s, n = 6)

Group	Dose (µmol/L)	0 h	24 h	48 h	72 h
DMSO blank		11.43 ± 0.65	12.18 ± 0.96	14.23 ± 1.33	15.34 ± 1.43
Camptothecin	5	11.98 ± 0.77	18.17 ± 1.71**	35.65 ± 4.12**	58.94 ± 5.13**
Isoliquiritigenin	0.5	11.27 ± 1.43	12.44 ± 0.97	16.12 ± 1.84	16.54 ± 1.54
Isoliquiritigenin	5	11.82 ± 0.89	18.65 ± 1.47*	26.28 ± 1.99**	48.17 ± 4.73**
Isoliquiritigenin	10	11.15 ± 0.56	20.12 ± 2.35**	36.55 ± 3.15**	67.76 ± 4.26**

Compared with the DMSO blank group;

^*P < 0.05;

^**P < 0.01.