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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.
Explain the Occurrence of Vitamin B 1 Vitamin B 1 occurs widely in the vegetable kingdom. The richest sources for vitamin B 1 , as you may already know, are yeast, grain ge
Describe Wide Split S in details? It is a persistent split that widens on inspiration to at least 60 msec. May be due to delay in P, e.g. RBBB or due to early A, as occasionall
why phloem made of living cells
Epidemiology The organism does not appear to be very host or tissue specific and can infect naturally a large number of avian and mammalian species. Chlamydiosis has been reco
Explain the Food Irradiation - method of food preservation? Food irradiation is another sterilizing technique in which the foods are bombarded by high-energy rays called gamma
in natural vegetative propagation which structure gives rise to new individuals?
describe the features of the rabbit femur bone
Which type of genetic disease can be identified from the visual analysis of the number of chromosomes present in a karyotype? The counting and identification of chromosomes in
What is crossing over? How is meiosis related to this phenomenon? The Linked alleles for instance, A-b and a- B form the gametes A-b and a-B that maintain the linkage of the al
Define why the Virginia opossum is considered a generalist and the koala is considered a specialist. The opossum feeds on almost anything, whereas the koala feeds only on the l
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