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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.
Single chromosome of a pair is known as homologue.In Homologous pair two identical chromosomes are there. Each one chromosome in a Homologous pair is known as Homologue.
How you can Repair Ventricular Aneurysm with a patch? Repair of Ventricular Aneurysm with a patch : Originally described by Cooley, as endoaneurysmorra
Q. What are the lateral lines of fishes? The lateral lines of bony fishes are sense organs that extend along both sides of the animal body they make contact with the environmen
Types of Transport Process in Sieve Tubes The metabolites of all the mesophyll cells around the sieve elements join in a common pool to load via the surrounding transfer cells
order of the phylum protozoa
Exchange transfusion An exchange transfusion is the serial withdrawal and injection of small amounts of blood through a central vein-usually umbilical until the required volu
Which of the following is true for the sodium-glucose co-transporter? A. The net flux of sodium ions is from a region of high sodium ion concentration to a region of low sodium
Question 1: What are Good Pharmacovigilance Process and Good Post-Marketing Surveillance Process? How do they differ from each other? Define and illustrate briefly Good Post
What are the best known representatives of the platyhelminth phylum? The most popular representatives of the platyhelminthes are worms that cause human diseases, like taenia an
How are bacteria classified according to their need for oxygen? According to their necessity of oxygen bacteria are classified into:- a) Anaerobic (those that survive withou
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