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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.
Porifera - Regeneration in Invertebrates Sponges have immense regenerating ability and show two ways of doing so as displayed below. : (a) Regeneration from small segments-
Define Role of Glucose-6-phosphate dehydrogenase - Gene Expression? Glucose-6-phosphate dehydrogenase (G6PD) is another enzyme involved in lipogenesis that is regulated by diet
Difference between aqueous humour and vitreous humour - Aquou s Humour Vitrou s humour 1. Occurs in aquous chamber 2. Wat
Which of the following is NOT required to determine equilibrium potential of a particular ion? Select one: size of the ion valence of the ion concentration gradient for
what are some adaptations of flatworms
M a l i g nant catarrhal fever (MCF) Malignant catarrhal fever is invariably fatal generalized lymphoproliferative disease of cattle and sometimes of wild ruminants. It is
MAJOR EVENTS DURING GASTRULATION - 1. There is rearrangement of cells due to morphogenetic movement of the cells of blastoderm. 2. The three primary germ layer g
Palaeobiology : This deals with the study of fossils and remains an impressions of the past organisms found in the rock of different ages. Paleobiology is a growing or comparativel
A saline drip is to be prepared for a lab experiment that is looking at hydration in lab rats. Calculate the amount of NaCl need to make 4 liters of a 0.9% solution.
Q. What is Tricuspid valve annuloplasty? It depends upon the cause of tricuspid regurgitation. Specific therapy is directed towards the particular cause of pulmonary artery hyp
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