Table 2. Comparison of the micro current value in malignant, benign or borderline and normal tissues.

Groups	Tissue type	Tissue number	Micro current value (μA)
1	Malignant tumor	102	33.3 ± 8.9
2	Benign or borderline tissue	47	24.4 ± 8.6
3	Normal tissue	96	14.0 ± 4.0

p(1 vs. 2) < 0.001; p(2 vs. 3) < 0.001.