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Explain Counter Stain - Ziehl-Neelsen Method?
Methylene blue is used to stain previously decolourized cells. All non acid-fast bacteria de-stained by acid alcohol now absorbs counter stain and takes on its blue colour. All acid-fast bacteria remained red in colour due to primary stain.
Genus Mycobacterium shows acid fastness. These are aerobic, slightly curved or straight rods that sometimes branch or form filaments. These filaments readily break down into rods and coccoid bodies, when disturbed. Some grow very slowly. Some are free-living saprophytes and some are pathogens, e.g. M. bovis could cause tuberculosis in cattles, M. tuberculosis causes tuberculosis in humans, M leprae causes leprosy in humans. Acid-fast stain has a diagnostic value in identifying these pathogenic mycobacteria.
How are genetic diseases classified? The Genetic diseases classify into chromosomal abnormalities and genetic mutations. Between chromosomal abnormalities there are the aneu
What happens to a cell when placed in a salt solution and then into distilled water?
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Wind energy Wind power is one of most cheapest renewable energy sources today. Wind turbines convert the power of wind into electrical energy. Wind occurs due to t
Q. 2-Dimensional Echocardiography constrictive pericarditis? Thickened pericardium can be detected. In about a third of patients there will be associated some degree of perica
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What are the symptoms of diabetes Healthy Person P takes a drug that produces a strong effect on the epithelial cells of the kidney collecting duct within one hour and lasts f
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Byproducts high in energy and nitrogen Byproducts in this category include products such as blood meal and poultry offal meal, fish meal, extracted oilseed meals/cakes and wast
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