TABLE 2

Biodistribution in Rip1Tag2 Mice at 0.5, 1, 2, and 4 Hours After Injection of [Lys⁴⁰(Ahx-DOTA-⁶⁸Ga)NH₂]-Exendin-4

Organ	0.5 h	1 h	2 h	4 h
Lungs^*	40.8 ± 3.5	42.5 ± 5.1	31.4 ± 2.9	42.5 ± 5.1
Pancreas^*	17.0 ± 2.4	13.5 ± 4.4	16.8 ± 6.3	13.5 ± 1.0
Stomach^*	4.05 ± 0.33	4.08 ± 0.59	2.56 ± 0.35	2.14 ± 0.77
Tumor^*	185 ± 33	209 ± 44	207 ± 60	205 ± 59
Kidneys	255 ± 14	230 ± 33	252 ± 24	202 ± 34
Liver	0.88 ± 0.04	0.61 ± 0.11	0.63 ± 0.12	0.61 ± 0.11
Spleen	2.14 ± 0.12	1.91 ± 0.50	2.10 ± 0.73	2.28 ± 0.59
Muscle	1.30 ± 0.10	1.13 ± 0.51	0.97 ± 0.09	1.00 ± 1.03
Bone	1.03 ± 0.33	1.01 ± 0.91	1.07 ± 0.13	0.89 ± 0.52
Blood	2.08 ± 0.49	1.35 ± 0.17	0.49 ± 0.03	0.29 ± 0.10
Tumor/blood	88.9	155	423	706
Tumor/muscle	142	185	214	205
Tumor/pancreas	10.9	15.5	12.4	15.2
Tumor/lungs	4.52	4.91	6.60	4.82
Tumor/kidneys	0.72	0.91	0.82	1.01