The aim of this investigation was to study the histological structure of the hepatic bile ducts in common quail (Coturnix coturnix). Twenty clinically healthy adult female and male common quail were used. Histological results showed that the hepatic bile ducts possessed tunica mucosa, tunica muscularis and tunica serosa. The tunica mucosa forms some simple folds which appeared to be irregularly...

Following incubation in an isotonic saline solution containing 20 mM EDTA, human oral mucosa may be separated into its epithelial and connective tissue components. Ultrastructural study of the separated tissues reveals that the plane of separation is through the lamina lucida. Hemidesmosomal structure is altered by the separation process: the peripheral density is absent but a fine, generally f...

Recently, many details of the interplay between tumor cells and tumor-associated stromal elements leading to the progression of malignant disease were elucidated. In contrast, little is known about the role of uninvolved stromal tissue in the remote surrounding of the malignant tumor. Therefore, we performed a computer-aided morphometric study of rectal mucosa in samples taken 10 cm and 20 cm a...

BACKGROUND Tumour necrosis factor (TNF) alpha and TNF-beta are soluble ligands binding to TNF receptors with similar activities; soluble TNF receptors neutralise TNF activity by acting as inhibitors. Little is known about the cytokine/soluble receptor role in inflammatory bowel disease (IBD). AIMS To test the hypothesis that an imbalance in secretion between TNF and TNF inhibitors plays a rol...

An accurate morphometric method is described for quantifying the intraepithelial lymphocytes (IEL), the area of the epithelium, and the volume of the lamina propria in jejunal mucosa of coeliac patients. All measurements are related to a unit-length of muscularis mucosa which is unaltered by the disease process. The results show a significant decrease in the epithelial surface area and an incre...

Duodenal samples were taken from similar locations in six cats, processed, stained, and examined via light microscope. There were no prominent circular folds (plicae circulares) or stratum compactum (lamina subglandularis). The 1072 microns x 201 microns villi were covered by 46 microns high columnar epitheliocytes proximally which decreased in height (41 microns) distally and displayed a 1.1-1...

A 54-year-old man was referred to our department for colorectal cancer screening. The colonoscopy revealed, at the ascending colon, several white plaques, some confluent, interspersed with normal mucosa (Fig. 1). Biopsies were performed and the histopathological examination showed a fragment of polypoid colonic mucosa with optically empty vacuoles in the lamina propria (Fig. 2) and irregular cy...

Helicobacter pylori infection is associated with chronic gastritis, peptic ulceration, and gastric carcinoma. The potential role of CD95-mediated apoptosis was investigated in a panel of gastric biopsies obtained from patients with H. pylori-associated chronic gastritis (n = 29) and with noninfected normal mucosa (n = 10). Immunohistochemistry revealed increased CD95 receptor expression in epit...

linated nerve fibers and Schwann cells is found near blood capillaries in the lamina propria of the proventricular mucosa of the finch. At least two types of endocrine cells (type I and II) are present mainly in the lamina propria mucosae where they form a neuro-endocrine complex, but some cells of both types are also seen in the basal part of the epithelial layer like mammalian basal-granulate...