Table 3.

Relative Expression Levels of MT Isoforms by Semiquantitative Conventional RT-PCR in Breast Cancer and Adjacent Benign Tissues (n = 20)

Gene detected	PCR cycles	Benign tissues	Tumor tissues*
MT-1A	35	1.68 ± 0.34	1.33 ± 0.10
MT-1B	40	0	0
MT-1E	25	0.66 ± 0.05	0.55 ± 0.09
MT-1F	30	0.36 ± 0.03	0.30 ± 0.02
MT-1G	40	2.66 ± 0.37	1.94 ± 0.25
MT-1H	40	1.99 ± 0.52	1.62 ± 0.20
MT-1X	35	1.91 ± 0.37	1.61 ± 0.17
MT-2A	25	1.04 ± 0.09	0.84 ± 0.07
G3PDH	25	1	1

*For tumor tissues, values are adapted from Jin et al. 40