Histological scores for wild type and inducible nitric oxide synthase (iNOS) deficient mice, 24 and 72 hours, and seven days after administration of trinitrobenzene sulphonic acid (TNBS)
| Time point | Wild type | iNOS deficient |
|---|---|---|
| Untreated | 0.3 (0.2) | 0.2 (0.2) |
| TNBS—24 h | 7.5 (0.2)* | 8.0 (0)* |
| TNBS—72 h | 4.8 (1.0)* | 5.1 (0.7)* |
| TNBS—7 days | 6.4 (1.0)* | 7.9 (1.0)* |
n⩾5. *Significant increase from untreated groups. No significant differences in histological scores were observed between the two groups.