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Grayscale value comparison of HLA-I antigens among different cell lines
| Tumor cell lines | n | Grayscale value (¯x ± s) |
| Raji | 7 | 114.04 ± 10.94a |
| Alexander | 7 | 165.97 ± 5.35ab |
| HepG2 | 7 | 167.02 ± 12.60ab |
| QGY-7703 | 7 | 161.46 ± 7.13ab |
| SMMC-7721 | 7 | 165.93 ± 5.21ab |
| K562 | 7 | 244.89 ± 4.60 |
P < 0.01 vs K562;
P < 0.01 vs Raji.
