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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.
Glycogen is a multibranched polysaccharide which serves as a part of energy storage in fungi and animals. In humans the glycogen is recognized and stored primarily in the cells of
Explain assessment of iron status - Serum Ferritin? Serum Ferritin: This method is indicative of iron stores. As we know, a long term negative iron balance first results in dep
Nature and Distribution of Viruses Although several infectious diseases of animals and plants had been found to be caused by viruses during early 20 th century, the true natur
Myocarditis Myocarditis is inflammation of the myocardium, of the heart muscles. i) Causes Infection: . Wrus, bacteria, fungus, parasites Non-infection: Radi
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What are extraembryonic membranes? Extraembryonic membranes are membranous structures that appear in parallel with the embryo and play significant roles in the embryonic develo
Minerals :- Sodium Food Source NaCl, MSG, other food additives, milk, low in most raw foods Nutritional Functional role Essential nutrient: Deficiency is ra
what is septum
Which of the following are features of allosteric inhibition? During the infection, there are many different environments that P. multocida will encounter. In order to cause an inf
Phosphate detergent as cause of water pollution
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