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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.
parts and functions of the anther
Getting ready to grow bacteria Secure two or three dozen shallow glass dishes. The glass coasters used to stay bed castors from marring floors will do. Cut 5 cm squares of wind
Define The Names of Some Immemorial Plants? From the time immemorial plants have been known by some name, they are common, vernacular or local names given by different persons.
State four steps to be followed to test for starch in a leaf
Aortic Valve replacement : The initial steps of the operation have been described earlier. Ascending aorta is cannulated. A single two-stage atrio-venous cannula is inse
Q. What are the human tissues affected by malaria? What are the main clinical manifestations of the disease? A plasmodium contaminates the human blood causing destruction of RB
Cell theory exception
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Duck plague (duck virus enteritis) Duck plague is the most serious disease caused by a herpes virus (Anatid herpes virus). Though antigenically homogenous, differences in virul
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