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Immunoreactivity of cyclooxygenase 2 (COX-2) in squamous cell lesions of the lower oesophagus in the control and experimental groups
| No of lesions | COX-2 | |
| Normal controls | 8 | 0.0 (0.01)* |
| Papillary hyperplasia | 27 | 0.4 (0.52)† |
| Dysplasia | 28 | 2.9 (0.3) |
*p<0.05 compared with papillary hyperplasia and dysplasia.
†p<0.05 compared with dysplasia.
