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Table 2 Mucosal damage evaluation after acetic acid ulcer in rats

From: Folic acid protects and heals gastric mucosa: role of acid output, inflammatory cytokines, angiogenic and growth factors

Ulcer score Macroscopic damage
0 No pathological change
1 Mucosa edema and petechial haemarrhages
2 1–5 small ulcers (1–2 mm)
3 More than five small ulcers or one medium ulcer (3–4 mm)
4 Two medium ulcers or one large ulcer (more than 4 mm)
5 Perforated ulcer