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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.
Ventilation of Tracheal System The manner in which tracheae are ventilated varies with species of insects but movement of air is achieved in two ways: Diffusion
Biotin (vitamin H) It was revealed that egg yolk could prevent dermatitis and emaciation in rats that were kept on raw egg white a$ the main protein source. The factor of
Gastro Epiploic Artery (GE) : Gastro epiploic artery is a less popular arterial conduit now. The midline chest incision is extended to the umbilicus and the right ga
Adaptive Radiations The organisms all the time tend to establish harmony with their environment. This process, called adaptation, enables the organism to face the vagaries of
Explain Adverse Effects of Oseltamivir Nausea and vomiting can occur. Taking the drug with food decreases the incidence of nausea. In juvenile rats, very high doses of osel
Explain Gluconeogenesis Gluconeogenesis (i.e synthesis of new glucose) is the synthesis of carbohydrate from non-carbohydrate, source. The major substrates for glucone
Diabetes Mellitus in the World As per the International Diabetes Federation Directory, in 1994 the global burden of the disease was estimated at 110 million. These cases will i
Triacylglycerols which is also known as triglycerides or fats consist of three fatty acid chains esterified to a glycerol backbone. Simple triacylglycerols have t
different types of animals and their respiratory organ
What is Soil Horizons In a profile, different horizons or layers are identified by certain designations assigned after comparison of the properties of the layer with those o
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