Table 1.

Biodistribution of  ^99mTc-N4 in mammary tumor-bearing rats.

% of injected dose per gram of tissue weight
(n = 3/time, interval, iv)
	30 min	120 min	240 min
Blood	0.23 ± 0.009	0.04 ± 0.002	0.02 ± 0.002
Heart	0.07 ± 0.005	0.01 ± 0.001	0.01 ± 0.000
Lung	0.20 ± 0.011	0.05 ± 0.002	0.03 ± 0.001
Thyroid	0.25 ± 0.011	0.03 ± 0.002	0.02 ± 0.001
Pancreas	0.07 ± 0.007	0.02 ± 0.002	0.02 ± 0.001
Liver	2.98 ± 0.083	1.14 ± 0.018	0.79 ± 0.026
Spleen	0.35 ± 0.026	0.37 ± 0.007	0.39 ± 0.020
Kidney	2.56 ± 0.101	1.11 ± 0.045	0.65 ± 0.028
Stomach	0.12 ± 0.005	0.02 ± 0.001	0.01 ± 0.000
Intestine	0.25 ± 0.004	0.39 ± 0.048	0.14 ± 0.003
Uterus	0.16 ± 0.014	0.02 ± 0.001	0.01 ± 0.001
Tumor	0.09 ± 0.004	0.03 ± 0.003	0.02 ± 0.001
Muscle	0.05 ± 0.002	0.01 ± 0.000	0.01 ± 0.000
Bone	0.07 ± 0.001	0.02 ± 0.001	0.01 ± 0.000
Brain	0.01 ± 0.000	0.00 ± 0.000	0.00 ± 0.000
Tumor/blood	0.40 ± 0.002	0.78 ± 0.044	0.70 ± 0.008
Tumor/muscle	1.96 ± 0.015	5.32 ± 0.402	3.35 ± 0.147
Tumor/brain	6.19 ± 0.365	11.06 ± 0.667	11.93 ± 0.675

Value shown represents the mean ± standard deviation of data from 3 animals.