Accumulation of Gd and Pt in A2780 and HeLa cells when incubated with GP1, GP2, cisplatin, and carboplatin near their IC₅₀ concentrations and 1 at 100 μM for 24 h.

Complex	Cell accumulation (fmol per cell)
	A2780 cells		HeLa cells
	Gd	Pt	Gd	Pt
GP1	2.5 ± 0.3	0.20 ± 0.03	5.7 ± 1.9	0.17 ± 0.01
GP2	1.4 ± 0.2	0.38 ± 0.1	1.1 ± 0.2	0.30 ± 0.06
1	0.26 ± 0.02	N/A	0.21 ± 0.01	N/A
Cisplatin	N/A	0.21 ± 0.02	N/A	0.27 ± 0.02
Carboplatin	N/A	0.22 ± 0.02	N/A	0.60 ± 0.11