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Quantitative immunohistochemistry for CD31 according to location of staining
| Mean grade of staining | All patients | AD+ | AD– | P-value |
|---|---|---|---|---|
| Media | ||||
| Outer layer | 3.5±0.7 | 5.1±1.1 | 2.4±0.7 | 0.037 |
| Middle layer | 1.7±0.3 | 2.1±0.6 | 1.4±0.4 | 0.258 |
| Inner layer | 0.9±0.2 | 0.7±0.3 | 1.1±0.4 | 0.714 |
Mean grade of staining expressed as point score units/mm2
AD - aortic dissection
