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Clusters of bacteria (arrow) shown on Warthin–Starry stain. The Warthin–Starry stain ( WS ) is a silver nitrate -based staining method (a silver stain ) used in histology. It was first introduced in 1920 by American pathologists Aldred Scott Warthin (1866–1931) and Allen Chronister Starry (1890–1973), for the detection of spirochetes .
The current taxonomy of Helicobacter bacteria is somewhat complex and incomplete, with new species currently being considered as possibly belonging to this genus. [2] [6] [7] Within the Helicobacter genus, H. heilmannii s. l. is a group of Helicobacter species that are distinguished from H. pylori by being two- to three-fold larger in size (they are 4-10 micrometers in length and 0.5-0.8 ...
It is also used to find Helicobacter pylori. [1] Intestinal mucins also take up the stain although not as strongly as Campylobacter-like organisms. [2] Cresyl violet is used to stain Heinz bodies in red blood corpuscles or for staining of the neurons in the brain and spinal cord. It is used to demonstrate the Nissl substance in the neurons and ...
Due to its short staining time, Diff-Quik stain is often used for initial screening of cytopathology specimens. This staining technique allows the cytotechnologist or pathologist to quickly assess the adequacy of the specimen, identify possible neoplastic or inflammatory changes, and decide whether or not additional staining is required. [4] [9 ...
Helicobacter heilmannii s.s. (H. heilmannii s.s.) is a species within the Helicobacter genus of Gram negative bacteria. [1] Helicobacter pylori (H. pylori) is by far the best known Helicobacter species primarily because humans infected with it may develop gastrointestinal tract diseases such as stomach inflammation, stomach ulcers, duodenal ulcers, stomach cancers of the non-lymphoma type, and ...
The virulence of H. pylori may be increased by genes of the cag pathogenicity island; about 50–70% of H. pylori strains in Western countries carry it. [111] Western people infected with strains carrying the cag PAI have a stronger inflammatory response in the stomach and are at a greater risk of developing peptic ulcers or stomach cancer than ...
Helicobacter cetorum is a helical, Gram-negative bacteria that is 4 μm long, 0.6 μm wide, and contains a bipolar flagella. [1] It was originally isolated from fecal samples of Atlantic white-sided dolphins and Beluga whales, and the samples were then visualized via electron microscopy and by Gram stain and Stein's silver stain in tissue.
Helicobacter heilmannii sensu lato (i.e. H. heilmanni s.l.) is a grouping of non-H. pylori Helicobacter species that take as part of their definition a similarity to H. pylori in being associated with the development of stomach inflammation, stomach ulcers, [11] duodenum ulcers, [12] stomach cancers that are not lymphomas, and extranodal ...