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肺癌组与对照组血清样品中Cu与Zn的测定结果（μg/g）
The comparison of Cu and Zn contents in the samples from the lung cancer group and normal group (μg/g)
| Cu | Zn | Cu/Zn | |
| Lung cancer group (n=16) | 16.88±2.17 | 9.92 ±1.01 | 1.70 |
| Normal group (n=5) | 11.01±2.15 | 11.77±2.08 | 0.94 |
| t | 7.00 | 2.12 | 6.18 |
| P | < 0.01 | < 0.01 | < 0.01 |
