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Comparison of human epidermal growth factor receptor 2 (HER2) status in pair samples of gastric cancer patients
| Biopsy sample | |||||
| 0 | + | ++ | +++ | ||
| Surgical sample | 0 | 55 | 11 | 2 | 0 |
| + | 18 | 6 | 2 | 0 | |
| ++ | 5 | 2 | 7 | 1 | |
| +++ | 0 | 0 | 2 | 5 | |
| Primary sample | |||||
| 0 | + | ++ | +++ | ||
| Metastatic samples | 0 | 28 | 1 | 1 | 1 |
| + | 2 | 2 | 2 | 0 | |
| ++ | 1 | 0 | 2 | 0 | |
| +++ | 0 | 0 | 0 | 4 | |
