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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.
Q. How can the tubular-dorsal nervous system in chordates be compared to the nervous pattern present in invertebrates? In chordates the nervous system is dorsal and highly ceph
Starch Retrogradation The starch paste or solution obtained after the gelatinisation is not stable and generally produces a viscoelastic, firm and rigid gel. Structural transf
What are fluid and deposit feeding in holozoic animals
C o ngestive heart failure (CHF) The heart is unable to maintain circulatory equilibrium at rest and congestion of venous circuit takes place followed by dilatation of vessel
Explain about the Bulimia Nervosa? Bulimia Nervosa, as you may recall studying earlier, is a disorder characterized by episodes of binge eating or very rapid intake of large am
Q. What is folic acid? Why is the anemia caused by deficiency of folic acid known as megaloblastic anemia? The folic acid when ionized it is called folate is a coenzyme that pa
Define about the Ionizing Radiation - carcinogenic? Ionizing Radiation: Electromagnetic (X-rays, gamma rays) and particulate (α - particles, β - particles, protons, neutrons) r
A dialogue and cartoon between haemoglobin and chlorophyll
Eucaryotic Cell Organelles A eucaryotic cell has excessive foldings of intrace!:u:;ir cembrane as compared to procaryotic cell. The eucaryotic cell has a number of'organelles s
Define Interaction of Vitamin C with other vitamins? a. Ascorbic acid and other vitamins: Ascorbic acid synthesis is diminished in thiamin and riboflavin deficiency. Vitamin
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