Runting stunting syndrome (RSS) is a multifactorial disease with many names and faces that had caused considerable economic losses to poultry through reduced uniformity, reduced livability, decreased body weights, elevated feed conversions, and many secondary diseases. The aim of the current study was to evaluate the effect of stunting syndrome on histopathology in chicks (n = 120) of different...

Verruciform xanthoma is a rare tumor-like lesion, predominantly affecting the oral mucosa. Although several studies of verruciform xanthoma have been reported, the characteristic features and pathogenesis have not been fully clarified. The purpose of the present study is to perform immunohistochemical analysis using markers of proliferative cell activity and cytokeratins, and to perform compara...

A mode of development of diffuse type cancers and adenocarcinomas was studied. Materials were small cancers endoscopically diagnosed, and minute cancers incidentally found in the gastric mucosa of resected human stomachs. In order to analyze initial lesions of signet ring cell carcinomas, we induced experimentally signet ring cell cancers in dog stomachs by administration of N-ethyl-N'-nitro-N-...

Hexachlorobenzene (HCB) is a porphyrogenic agent. The inducement of skin changes was attempted through repeated exposure of the skin of HCB-induced porphyric rats to sunlight. The following skin changes were produced in the porphyric rats; erythema, erosion, crust, skin thickening and scarring. Histopathological examination revealed the presence of acanthosis, vacuolization of the malpighian ce...

The purpose of this study was to systematically demonstrate and compare the pathological and immunohistochemical changes in goats which were infected by a fixed rabies virus that was used in vaccine production. In the histopathological examinations, varying degrees of inflammatory, degenerative and necrotic changes were detected in the central nervous system. In the preparations stained by the ...