Table 1.

The IC₅₀ values of GA, Doxorubicin and Fe₃O₄-PEG-GA on cancer cell lines.

Cancer Cell Lines	IC50 (μg/mL) *			Effective IC50 (μg/mL) **
	GA	Fe3O4-PEG-GA	Doxorubicin	Fe3O4-PEG-GA
HT29	14.52 ± 0.94	4.85 ± 0.33	0.33 ± 0.03	1.70
MCF-7	21.35 ± 4.14	7.28 ± 0.64	0.05 ± 0.01	2.55
A549	56.49 ± 4.31	37.49 ± 1.42	0.58 ± 0.01	13.1

* Values are expressed as the mean ± standard deviation of 3 replicates. The IC₅₀ value is defined as the concentration of drug needed for 50% cell inhibition; ** Values of actual IC₅₀ that were calculated based on 35% GA loading in the nanocomposite.