Table 1.

In vitro cell uptake assays (an average of three measurements).

	MCF-7			SK-BR-3
	68GaCl3	68Ga-GAP-EDL	68Ga-GAP	68GaCl3	68Ga-GAP-EDL	68Ga-GAP
30min	1.35±0.35	12.91±0.4∗	2.20±0.73	1.74±0.21	3.63±1.02	1.84±0.27
1h	1.79±0.28	10.61±2.34	3.20±1.17	1.80±0.20	9.28±0.49	3.11±1.29
2h	1.63±0.33	10.17±1.38	2.43±0.71	2.21±0.11	10.65±0.78	2.45±0.21

∗ Significant difference between corresponding groups (t-test, P<0.05).