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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.
Cleft Palate Well you have now learnt about the cleft lip and now let us discuss and understand what is cleft palate. Cleft palate (CP) is midline fissure of the palate that
Valacyclovir (Valtrex) - Valacyclovir is an L-valyl ester of acyclovir that is metabolized to acyclovir after oral administration, resultingin higher serum concentrations than
Endothelium is a source of vasoconstrictor factor also. The best characterized of these are the endothelins. Endothelium produces only ET1. Unlike NO, which is released rapidly in
Explain the Phase Contrast Microscop? Unpigmented and unstained living cells can be easily observed by phase contrast microscope. It has a special objective and a condenser th
Q. What are the consequences of shifting the chemical equilibrium of the formation of bicarbonate from water and carbon dioxide towards the consumption of products of the reverse r
Mortality - Population Parameters and Regulation The death of an individual in a population is known as mortality. Mortality rate like natality rate can be expressed as the nu
Define Primary Level Care - Public Nutrition? This is the first level of contact of an individual, the family and the community with the national health system. It is possible
What is commensalism? Commensalism is the ecological interaction in which one individual advantage while the other is neither benefited nor harmed. Commensalism is a harmonious
Explain about the Canning of Food? You must have seen the markets flooded with canned products. Can you name a few of such products? Yes the canned juices, canned aerated drink
How mathematics and statistics related to Biology? This report emphasizes the benefits that the fields of mathematics and statistics can bring to biology, but there are recipro
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