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Acid-Fast Stain
Acid-fastness is a physical property of certain bacterial and eukaryotic cells, as well as some sub-cellular structures, specifically their resistance to decolorization by acids during laboratory staining procedures. Once stained as part of a sample, these organisms can resist the acid and/or ethanol-based decolorization procedures common in many staining protocols, hence the name ''acid-fast''. The mechanisms of acid-fastness vary by species, although the most well-known example is in the genus '' Mycobacterium'', which includes the species responsible for tuberculosis and leprosy. The acid-fastness of ''Mycobacteria'' is due to the high mycolic acid content of their cell walls, which is responsible for the staining pattern of poor absorption followed by high retention. Some bacteria may also be partially acid-fast, such as '' Nocardia''. Acid-fast organisms are difficult to characterize using standard microbiological techniques, though they can be stained using concentrated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mycobacterium Tuberculosis Ziehl-Neelsen Stain 640
''Mycobacterium'' is a genus of over 190 species in the phylum Actinomycetota, assigned its own family, Mycobacteriaceae. This genus includes pathogens known to cause serious diseases in mammals, including tuberculosis ('' M. tuberculosis'') and leprosy ('' M. leprae'') in humans. The Greek prefix ''myco-'' means 'fungus', alluding to this genus' mold-like colony surfaces. Since this genus has cell walls with Gram-positive and Gram-negative features, acid-fast staining is used to emphasize their resistance to acids, compared to other cell types. Metabolism and Morphology Mycobacteria are aerobic with 0.2-0.6 µm wide and 1.0-10 µm long rod shapes. They are generally non-motile, except for the species ''Mycobacterium marinum'', which has been shown to be motile within macrophages. Mycobacteria possess capsules and most do not form endospores. ''M. marinum'' and perhaps ''M. bovis'' have been shown to sporulate; however, this has been contested by further research. The disti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ellis And Zabrowarny Stain
Ellis is a surname of Welsh and English origin. Retrieved 21 January 2014 An independent French origin of the surname is said to derive from the phrase fleur-de-lis. Surname A *Abe Ellis (Stargate), a fictional character in the TV series ''Stargate Atlantis'' *Adam Ellis (born 1996), British speedway rider * Adrienne Ellis (born 1944), American-Canadian actress *Albert Ellis (other), multiple people * Alexander Ellis (other), multiple people * Allan Ellis (other) *Alton Ellis (1938–2008), Jamaican musician * Andrew Ellis (other), multiple people * Anita Ellis (other), multiple people *Annette Ellis (born 1946), Australian politician *Arthur Ellis (other), multiple people *Atom Ellis (born 1966), American musician *Aunjanue Ellis (born 1969), American actress B * Ben Ellis (other), multiple people * Bill Ellis (1919–2007), English cricketer *Boaz Ellis (born 1981), Israeli fencer *Bob Ellis (born 1942), Australi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
