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Immunohistochemical staining for positive expression rate (membrane or nucleus)a of claudins in 100 colorectal adenocarcinoma tissue samples.
| Claudin | Membranous expression, n (%) | Nuclear expression, n (%) |
|---|---|---|
| Claudin-3 | 58 (58.0) | 22 (22.0) |
| Claudin-7 | 50 (50.0) | 2 (2.0) |
Data were grouped according to immunostaining scores based on positive and incomplete staining (%): Negative expression, 0 (0%) and 1+ (<25%); and positive expression, 2+ (25–50%), 3+ (50–75%) and 4+ (>75%).
