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Define Ziehl-Neelsen Staining Technique?
Ziehl-Neelsen staining is used for staining these bacteria. The technique was discovered first by Robert Koch during his pioneering investigations on tuberculosis and was the fore-runner of Ziehl-Neelsen stain used today for diagnosis of these organisms in laboratory. Acid fast bacteria are called so because once these cells get stained with basic fuchsin, these resist decolourization with acid alcohol as can be seen in margin illustiation. This acid fastness red stain is due to high lipid content particularly of mycolic acid in their cell wall. Mycolic acid, is a group of branched chain hydroxyl lipids, which bind covalently to peptidoglycan of cell wall giving the cell surface a waxy, hydrophobic consistency.
Characteristic of Ecotone A general characteristic of ecotone is that it has sufficiently greater number of species and the diversity of most of the species at times is higher
State the Transmission of Visual Sensation This process takes place in the visual pathway from the retina to the visual cortex. 'The impulse originating in the retina travels a
Describe the structure of pectin Its structure is presented in the figures (a) and (b). Pectin is a polygalacturonic acid ester along with rhamnose, arabinose and galactose.
Why does one need to study about soil and what is its importance? You would be aware that, from the dawn of agriculture, cultivators were attracted to fertile soils of river
What are the advantages of the closed circulatory system over the open circulatory system? The closed circulatory system is more efficient. As blood circulates only inside bloo
Define Patient Education for preventive strategies for food allergy? Patient education, therefore, is critical and should include: Allergen identification (e.g., how to
Counselling a diabetic patient and their family members is very important as patient has to modify the life style and diet and needs family support. Therefore it is important for y
Which terrestrial vertebrate group is extremely rare in deserts? The Amphibians are terrestrial vertebrates very rare in desert environments (although there are a few species a
PHYLUM ANNELIDA Definition and Introduction Bilateral and protosomial eucoelomate eumetazoans whose long narrow and wormlike body is division into ring like t
Q. What is population growth rate? The Population growth rate (PGR) is the percent variation between the numbers of individuals in a population at two different times. Thus the
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