What important genus requires acid-fast staining?
The acid-fast stain is a differential stain used to identify acid-fast organisms such as members of the genus Mycobacterium .
What bacteria is acid-fast staining used for?
Acid-Fast Bacteria—Ziehl– Neelsen Stain This stain is used to identify Mycobacterium tuberculosis, the causative agent of tuberculosis. Acid-fast organisms have a lipoid capsule that has a high molecular weight and is waxy at room temperature. This makes the organism impenetrable by aqueous-based staining solutions.
Which genus of bacteria are acid-fast?
mycobacteria
Acid-fast bacteria include the mycobacteria, of which there are more than 30 well-characterized members of the genus and many more unclassified Daniel (1992). Most mycobacteria are not pathogenic, and are readily isolated from the environment Daniel (1992).
Why is the acid-fast stain clinically useful?
Why is the acid-fast stain clinically important? The acid-fast stain is used in the diagnosis of TB (Mycobacterium tuberculosis) a significant health concern worldwide. Additionally, this stain is useful in the diagnosis of diseases caused by other members of the genus Mycobacterium (M. avium and M.
Which of the following clinically important organisms are considered acid-fast?
Common acid-fast bacteria of medical importance include Mycobacterium tuberculosis, Mycobacterium leprae,Mycobacterium avium-intracellulare complex, and Nocardia species.
What medically important organisms can be detected using the acid fast stain?
Mycobacterium tuberculosis, the bacterium that causes tuberculosis, can be detected in specimens based on the presence of acid-fast bacilli.
What is the clinical significance of determining whether or not a bacterium is acid-fast?
what is the clinical significance of determining whether or not a bacterium is acid-fast? acid-fast bacteria have unusual cell wall structures that hold onto the stains used in common diagnostic staining protocols, like gram stain. An acid fast bacterium holds onto the dye.
What is the purpose of acid-fast staining quizlet?
What is the purpose of an Acid-Fast stain? It is a differential stain used to detect cells capable of retaining a primary stain when treated with an acid alcohol.
What is acid fast stain quizlet?
Acid Fast Stain. *A differential stain which distinguishes bacteria based on cell wall properties. *Gram positive microorganisms that are resistant to gram stain, acid fast allows us to see this bacteria. mycolic acid. a waxy substance in cell walls of acid fast bacteria.
Why is acid-fast staining not used as widely as gram staining?
Why is the acid fast stain not as widely used as the gram stain? very few bacteria are acid fast positive, so the test is less useful than a gram stain, which separates organisms into two large groups.
What is the purpose of acid fast staining quizlet?
What are the stains used in acid fast staining?
The primary stain used in acid-fast staining, carbol fuchsin, is lipid-soluble and contains phenol, which helps the stain penetrate the cell wall. This is further assisted by the addition of heat in the form of heat (steam).
