Table 2.

Relative intensity scale of Na⁺ and K⁺ distributions in MDA-MB-231 and MCF-7 tumors (see Figure 2), measured from 3 by 3 tiles corresponding to about 300 μm by 300 μm. All values were normalized to the values obtained for Na⁺ in the viable regions of the respective tumor model.

Compound	Region selection	MDA-MB-231 Relative intensity	MDA-MB-231 Normalized value	MCF-7 Relative intensity	MCF-7 Normalized value
Na⁺	Necrotic region	26.6×10⁺⁵	1.73	100×10⁺⁴	5.88
Na⁺	Viable region	15.4×10⁺⁵	1.00	17×10⁺⁴	1.00
K⁺	Necrotic region	57.0×10⁺⁵	3.70	59×10⁺⁴	3.47
K⁺	Viable region	42.0×10⁺⁵	2.72	98×10⁺⁴	5.76