Trace Metals (μg/g tissue) Control  group (Mean ± SD) Cancerous Group (Mean ± SD) t-test P- value
Lead 0.10 ± 0.02 0.21 ± 0.07 5.54 P<0.001**
Cadmium 0.05 ± 0.02 0.22 ± 0.14 6.57 P<0.001**
Chromium 0.16 ± 0.03 0.38 ± 0.15 4.87 P<0.001**
Nickel 0.24 ± 0.04 0.72 ± 0.24 5.84 P<0.001**
Iron 5.02 ± 1.21 11.89 ± 2.86 6.63 P<0.001**
Zinc 11.30 ± 4.32 15.04 ± 10.24 1.36 P = 0.539
*P<0.05 / **P≤0.01
Table 1: Levels of different trace metals measured in breast tissue of the Cancerous group in relation to the control group.