Table 2. The inhibitory effect of the combined treatment of STI571 and As₂O₃ on K562-n/VCR cells

	Survival rate of cells (%)
	As₂O₃ dosage (mol/L, x ± s)
Groups	0.01	0.1	1	10	100	IC₅₀	Synergistic effect
As₂O₃	92.33 ± 2.57	81.66 ± 0.61	79.49 ± 1.87	16.11 ± 0.22	11.75 ± 1.22	1.879	-
As₂O₃+STI571	65.41 ± 2.15	57.80 ± 0.69	48.31 ± 2.75	11.53 ± 1.03	10.70 ± 0.52	0.155	12.12

Note: The final concentration of STI571 was 1 μmol/L.