Table 3.

Results of boron uptake into normal brain cells and tumor cells by the boron CSF administration method (Nos. 1–5) and by the IV administration method (Nos. 6 and 7) in B16F10 melanoma model rats.

Animal Case Number	Boron Concentration in Tumor Cells (µg/g)	Boron Concentration in Normal Cells (µg/g)	T/N Ratio
No. 1	23.7	13.2	1.8
No. 2	9.4	8.1	1.2
No. 3	12.4	3.7	3.4
No. 4	62.1	25.7	2.4
No. 5	19.5	4.4	4.4
No. 6	33.2	9.5	2.6
No. 7	10.2	6.3	1.3