Table 3.

T/NT of ^99mTc labeled compound 5 at various time intervals in nude mice bearing human colonic cancer xenografts (n = 3, $\overline{x}\pm \text{SD}$).

Tissues	1 h	3 h	6 h	20 h
Stomach	0.07 ± 0.02	0.18 ± 0.06	0.69 ± 0.10	1.02 ± 0.07
Small intestine	0.63 ± 0.20	0.92 ± 0.15	0.62 ± 0.64	1.93 ± 0.47
Kidney	0.09 ± 0.04	0.14 ± 0.02	0.13 ± 0.02	0.10 ± 0.02
Liver	0.26 ± 0.06	0.27 ± 0.08	0.34 ± 0.03	0.31 ± 0.02
Lung	0.16 ± 0.02	0.12 ± 0.01	0.04 ± 0.01	0.27 ± 0.28
Muscle	1.01 ± 1.18	3.88 ± 4.19	2.77 ± 2.05	5.81 ± 0.93
Heart	1.22 ± 0.34	1.66 ± 0.19	2.54 ± 0.15	3.00 ± 1.05
Brain	10.70 ± 3.34	9.99 ± 4.53	12.90 ± 2.95	18.30 ± 5.72
Blood	0.72 ± 0.23	1.18 ± 0.02	1.60 ± 0.26	3.01 ± 0.98