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Degree of CD28 expression on CD8+ T-lymphocytes in comparison with CD3-ζ expression in the paracortex. Parallel sections of all 21 sentinel node biopsies were analyzed (numbers are frequencies).
| Expression of CD3-ζ | Expression of CD28 on CD8+ | ||
| High | Moderate | Low | |
| High | 1 | 0 | 0 |
| Moderate | 3 | 0 | 0 |
| Low | 11 | 5 | 1 |
