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Explain the Primary Stain - Ziehl-Neelsen Method?
Ordinary aqueous stains like methylene blue, crystal violet, etc. are not able to stain most of the species of Mycobacteria. Carbol fuchsin, a red mixture of basic fuchsin and phenol can be used for staining these bacteria. Basic fuchsin, binds to carboxylic acid group of mycolic acid and phenol enhances penetration of basic fuchsin into lipid. Penetration is further enhanced by slow heating to steaming for 2-3 minutes. This drives the stain inside the cytoplasm. In modified Ziehl-Neelsen method, instead of heating, a wetting agent - Turgitol - can be added to the stain. This agent reduces surface tension between the cell wall of the mycobacteria and the stain. After staining, all cells become red.
Alfieri Repair: This is advised for ischaenlic mitral regurgitation. In the area of prolapse, the anterior and posterior leaflet edges are approximated with one or two mattress
GERENAL CHARACTERICS OF PHYLUM ANNELIDA
Choose the correct answer. A. The phenotype determines the genotype. B. True-breeding individuals are produced by repeated backcrossing. C. Recessive alleles are usually loss-of-fu
Q. ST Depression only on Recovery? Although ST depression during exercise often persists into recovery, it may not manifest until exercise has been terminated. The reasons for
Nature: Matter and Energy Nature is not just our immediate surrounding or environment, but is the whole Universe of Cosmos. Study of the origin and topography of cosmos is ca
Define Broken Instrument Removal Procedures File or reamer Gates-glidden Peso drills Lentulo spiral paste fillers Thermomechanical gutta-percha computer
If the titration is done by adding NaOH to a solution containing 2.661 moles of lysine, how many milliliters (mL) of a 5 M solution of NaOH would you have to add to reach point "E"
Q. Is rabies caused by virus or by bacteria? How is it transmitted? Which organs and tissues are affected by the disease? How is it prevented and treated? The Rabies, as well k
Gills - Respiratory Organs Gills are the specialised respiratory organs of several aquatic animals. They are found in mollusis and as well in many crustaceans. Typically gills
The agouti locus in mice has three alleles: A is recessive and confers a black coat, A is dominant to a and confers an agouti coat, and AY is dominant to both and confers a yellow
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