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Explain the Primary Stain - Ziehl-Neelsen Method?
Ordinary aqueous stains like methylene blue, crystal violet, etc. are not able to stain most of the species of Mycobacteria. Carbol fuchsin, a red mixture of basic fuchsin and phenol can be used for staining these bacteria. Basic fuchsin, binds to carboxylic acid group of mycolic acid and phenol enhances penetration of basic fuchsin into lipid. Penetration is further enhanced by slow heating to steaming for 2-3 minutes. This drives the stain inside the cytoplasm. In modified Ziehl-Neelsen method, instead of heating, a wetting agent - Turgitol - can be added to the stain. This agent reduces surface tension between the cell wall of the mycobacteria and the stain. After staining, all cells become red.
Illustrate Nernst equilibrium potential for potassium ions A complete motor neuron is removed from a frog and placed in normal physiological saline at 1 AM. The neuron is hea
Paclitaxel is a anticancer drug. It stabilizes microtubules and as a result, interferes with the normal breakdown of microtubules (you will know about microtubules in future lectur
Adverse Effects of Imiquimod Application site reactions (irritation, pruritus, flaking, erosion) are generally mild to moderate in intensity and resolve within 2 weeks of cessa
Explain about Urinary system Urinary system provides us with the service of disposing the waste products carried by blood. This function is also known as excretion.
Why can mitochondria be considered the power plants of the aerobic cells? Ans) Mitochondria are the "power plants" of aerobic cells due to within them the final stages of the ce
Which is the type of gamete produced by a heterozygous individual? What is the genotypical proportion of these gametes? Heterozygous individuals, for instance, AA, produce two
What are trends of the gametophyte in the evolution of plants? The tendency of the gametophyte evolution in plants has been towards the formation of gametes that are self-dete
Iron deficiency should be treated with supplemental iron. • Osteoporosis should be treated with calcium and vitamin D supplements. • Depending on individual factors, patien
Explain about the Vitamin A? Vitamin A, one of the fat soluble vitamins, refers to a sub-group of retinoid that possess the biological activity of all-trans-retinol. The term '
Q. What is an oligopeptide? How is it differing from a polypeptide? Peptide is the molecule formed by the union of amino acids through the peptide bond. Oligopeptide is a pepti
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