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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.
Q. Thumb rule for dietary management? The thumb rule for dietary management is to advice the patient to try to cut down or avoid: Red meats. Organ meats such as br
State the Versions of Binocular movements Versions are movements of both eyes in the same direction. a) Dextroversions: Movements of both eyes to'the right side. b) Levov
How do meiosis do in developing of new varieties of crops
Q. What are the hydrophobic molecules (or hydrophobic molecular regions)? What are the hydrophilic molecules? How can they be characterized in relation to their polarity? Hydro
Cytokinins - Apical Dominance Cytokinins are also involved in the regulation of apical dominance. Wickson and Thimann studied the interaction of cytokinins and auxins in contr
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Explain what is Genetic Factors ? It has been suggested that certain genetic defect(s) could be partly responsible for increased risk of CAD in Asian Indians. No specific genet
Atherosclerosis, the most common part of hardening of the arteries, is characterized by the presence of cholesterol-rich arterial thickenings (atheromas). This progressive diseas
Explain Historical Example of connecting models and data? An excellent instance of a program that links theory and data is collaborative work on the population dynamics of flou
Explain the Energy requirement in Postoperative Nutritional Care? Adequate calorie intake is critical for successful outcome of surgery and should be provided in the form of ca
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