COLORACION DE ZIEHL NEELSEN PDF

Objetivo Comparar las coloraciones Ziehl-Neelsen modificada (ZNm) y Safranina como la coloración Safranina modificada la cual ha mostrado una alta. Tinción de Ziehl-Neelsen. 2. Digestión y variante de Kinyoun o coloración fría , emplea cuerpos parece que en sensibilidad supere a la tinción de Ziehl-. COLORACION ZIEHL NEELSEN – Download as Powerpoint Presentation .ppt /. pptx), PDF File .pdf), Text File .txt) or view presentation slides online.

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Initially, carbol fuchsin stains every cell. Unsourced material may be challenged and removed.

Ziehl–Neelsen stain

Wilson, and Verna Morton. Coloraxion other projects Wikimedia Commons. From Wikipedia, the free encyclopedia. The slide is flooded with carbol fuchsin, neelssn is then heated to dry and rinsed off in tap water. Please help improve this article by adding citations to reliable sources. Mycobacterium tuberculosis is the most important of this group because it is responsible for tuberculosis TB.

The Ziehl—Neelsen stainalso known as the acid-fast stainwas first described by two German doctors: These acids resist staining by ordinary methods such as a Gram stain.

This page was last edited on 14 Decemberat How to identify fungi to genus III: It is a special bacteriological stain used to identify acid-fast organisms, mainly Mycobacteria. April Learn how and when to remove this template message. Applications to Patient Care.

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Coloración Gram y Ziehl Neelsen by Jennifer Yaquí on Prezi

A typical AFB stain procedure involves dropping the cells in suspension onto a slide, then air drying the liquid and heat fixing the cells. Acid-fast bacilli are bright red after staining. Retrieved from ” https: McGraw-Hill Higher Education, Acid-fast organisms like Mycobacterium contain large amounts of lipid substances within their cell walls called mycolic acids.

The Ziehl—Neelsen stain can also hinder diagnosis in the case of paragonimiasis because the eggs in an ovum and parasite sputum sample OnP can be dissolved by the stain, and is often used in this clinical setting because signs and symptoms of paragonimiasis closely resemble those of TB.

Les Russules d’Europe et d’Afrique du Nord. Acid-fast bacteria retain carbol fuchsin so they appear red.

Thereafter, the cells are stained in methylene blue and viewed under a microscope under oil immersion. Views Read Edit View history. Laboratory Manual and Workbook in Microbiology: When they are de-stained with acid-alcohol, only non-acid-fast bacteria get de-stained since they do not have a thick, waxy lipid layer like acid-fast bacteria.

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Microbial and histological stains. Studies have shown that an AFB stain without a culture has a coloracikn negative predictive value. This article needs additional citations for verification.

Other important Mycobacterium species involved in human disease are Mycobacterium lepraeMycobacterium kansasiiMycobacterium marinumMycobacterium bovisMycobacterium africanum and members of the Mycobacterium avium complex. Articles needing additional references from April All articles needing additional references Zieh, category link is on Wikidata.

When counter stain is applied, non-acid-fast bacteria pick it up and become blue methylene blue or green malachite green when viewed under the microscope. By using this site, you agree to the Terms of Use and Privacy Policy. Journal of Clinical Pathology. A variation on this staining method is used in mycology to differentially stain acid-fast incrustations in the cuticular hyphae of certain species of fungi in the genus Russula.

The reagents used for Ziehl—Neelsen staining are — carbol fuchsinacid alcohol, and methylene blue.