Table 2.

Biodistribution in mice (% injected dose per gram organ ± SD, n = 3) 4 h after administration [^99mTc/tricine/HYNIC⁰, d-Tyr⁵-d-Tyr⁶-d-Phe¹³] Bombesin (5–14)

Organ	Unblocked	Block
Blood	0.19 ± 0.06	0.21 ± 0.08
Bone	0.11 ± 0.05	0.14 ± 0.02
Kidneys	3.65 ± 1.12	3.85 ± 1.7
Pancreas	0.93 ± 0.17	0. 22 ± 0.12
Spleen	0.14 ± 0.06	0.17 ± 0.09
Stomach	0. 13 ± 0.03	0.11 ± 0.03
Intestines	0.96 ± 0.44	1.2 ± 0.21
Liver	0.15 ± 0.08	0.17 ± 0.04
Lung	0.23 ± 0.04	0.28 ± 0.07
Heart	0.15 ± 0.02	0.16 ± 0.02
Muscle	0.06 ± 0.02	0.07 ± 0.03
PC-3 tumor	1.32 ± 0.08	0.24 ± 0.05