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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.
Casein is the main protein in milk. There are three types of casein, one of which is beta casein. Beta casein comes in two main variants called A1 and A2. The order of amino acids
Describe Systolic Sounds in heart dieases? Early Systolic Sounds: Aortic or pulmonary ejection sounds are the most common early systolic sounds. These are high frequency soun
Why Neuron A is a healthy neuron Neuron A is a healthy neuron with all the usual ion channels. When at rest with a membrane voltage of R millivolts, neuron A produces no acti
Define Features of male and female ascaris lumbricoides? i) Ascaris lumbricoides is commonly called round worm. ii) Body is elongated, cylindrical, tapering at bot
WAXES These are monoglyceride compounds. They are chemically inert (due to absence of double bonds) and insoluble in water. On heating they become soft and pliable
Penicillin allergy Cefazolin is often used for prophylaxis in penicillin-allergic patients, but such patients rarely may have allergic reactions to cephalosporins. When allergy
about how humans survive and reproduce currently. In your journal, write down three adaptations that help humans have differential survivability, and three adaptations that help hu
Q. What is Acute Severe Mitral Regurgitation? Acute severe mitral regurgitation is a medical emergency. Patient presents with breathlessness and low output state. He may be is
A L VEOL I - Sac like structure, unit of lungs. Increase surface area, exchange of gases occur in it. Rich in blood capillaries. Aloeoli join by pore of Kuhn to form a
Members of phylum animal like protist that are only free living
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