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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.
Extracted chlorophyll pigments If we take chlorophyll molecule in a test tube and provide 2 CO and water and expose the mixture to sunlight, glucose is not formed. If we
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State the Principle of Adaptation The first principle is that the central goal of assessment is to promote the adaptation of the child, rather than simply to document the prese
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Pulp Tissue Revascularization : Definition: Is the procedure to re-establish the vitality in non-vital tooth by allowing repair & regeneration of the tissues.
Q. Echinoderm identity card. How are echinoderms characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, respiratory
What is a population? In Biology a population is a set of individuals of the similar species living in a given place and in a given time.
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