Fig. 1

Clinically significant gastric lesions in a foal 14 days after weaning characterised by deep ulceration in the squamous epithelium and acute haemorrhage (black arrow). The image was obtained from the lesser curvature of the stomach along the margo plicatus. Blood sucrose concentration at 45 and 90 min for this foal was 35.4 and 34.3 µmol/L respectively. This foal would have been correctly identified as positive for EGUS using the blood sucrose test