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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.
Germ Layers - Metazoa The infolding of the blastoderm of the blastula forms a gastrula with two or more layers. The outer layer is the ectoderm' and the endoderm lines the inn
Q. Describe Consciousness as the waking state? Consciousness as the waking state: consciousness is also referred to as the waking state as opposed for example to sleep. All
a) Why is it significant that ions being transported across a cell membrane be shielded from the interior of the lipid bilayer? b) Why is photosynthesis referred to as
Metals and Alloys in alloplastic implant materials Most of the dental implant systems are made of metals or their alloys. Currently commercially pure titanium and its alloy Ti-
THE RAPEUTIC NURSE: Development of therapeutic nurse patient relationship is the basic requirement of nursing. A helping relationship in nursing may be explained as an in
Explain the Basal Metabolic Rate? The Basal Metabolic Rate (BMR) gradually decreases after the attainment of maturity due to a decrease in muscle mass tissues and physical acti
Different areas of brain - HUMA N BRAIN DIFFEREN T AREAS OF BRAIN Note : - In brain glutemic acid metabolins is common In latemaria brain's size
How do organisms like:- a) fungi, b) zooplanktons and c) bears overcome the temporary short- lived climatic stressful conditions? Define.
Two chromosomes in a cell have identical length and centromere position yet are not homologous, what is different about them
Beginning with the entry of fatty acid into target cells, describe in detail how inactivation of carnitine can lead to a high level of fatty acids in the blood.
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