Fatal suppurative meningoencephalitis caused by Klebsiella pneumoniae in two calves.

One calf died (No. 1) and another was euthanized following astasia (No. 2).

Aberrant EphB/ephrin-B expression in experimental gastric lesions and tumor cells.

Aim: To determine whether the expression profiles of EphB receptor and ephrin-B ligand can be used as markers for dysplastic/oncogenic transformation in gastric mucosa.

Methods: The protein expression and localization of EphB and ephrin-B in normal, ulcerated regenerating, and dysplastic gastric mucosa were examined in a rat experimental model by immunolabeling, and mRNA expression was assessed in four human gastric carcinoma cell lines by reverse transcription-polymerase chain reaction.

Results: Ephrin-B- and EphB-expressing regions were divided along the pit-gland axis in normal gastric units.