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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.
Explain Point Mutations gene? Mutations involving single genes occur by addition, substitution, or deletion of a single base in DNA. Such mutations, called point mutations, ca
Open Pulmonary Valvotonzy, I nfundibular Resection and Trans Annular Patch : The pulmonary annulus may be narrow based on pre-operative investigations and on measurement
Define Mineral Requirements during pregnancy period - Iron? While B 12 and folk acid are needed for the normal erythropoiesis, they must be accompanied by adequate amounts of
How does the structure of a crab relate to its habitat? It's difficult exoskeleton protects it for most predators & keeps water off its flesh. The claws are used for mating due
What are the Stages of soil The development of soil takes place in two stages. In the first stage there is formation of parent material which is generally consolidated and cons
What are the Fat Requirements of athletes? Fats are the body's other major energy source. It is a well known fact that fat is a highly concentrated source of energy
PITS Depressions in secondary cell wall is called pit. A pit present on the free cell wall surface without its partner is called Blind pit. It consists of 2 parts -
BLOO D VESSELS - Some vessles supply blood to wall of large vessels these are vessel of vessels or vasa vasorum . Mainly artery and vein, 2 types of vessels present.
What is HMP pathway The HMP pathway like glycolysis occurs in the cytosol of the cell. However, C02 which is not produced in glycolysis, is a characteristic product in HMP
Explain the Techniques of Numerical Taxonomy Many other techniques of numerical taxonomy are available now, some with special objectives. Classification based on the methods
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