stained if the dyer solution is used at the specific pH at which the reactive groups are fully ionized. To achieve full ionization of the reactive groups‚ some alcian blue methods begin with a rinsing of sections in the appropriate pH solution prior to staining with the dye solution. In general‚ strongly sulfated mucins react more consistently at low pH levels. Above a pH of 1.0 their reactions are variable. At a pH of 0.2 only strongly sulfated mucosubstances will be demonstrated‚ while weak sulfated mucins
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Tissues of the periodontium (Chapter 2) Periodontium * The tissues that surround‚ support‚ and attach to the teeth Components of the periodontium 1. Gingiva 2. Periodontal ligament 3. Cementum 4. Alveolar bone Function of the periodontium * To support the teeth and oral structures The gingiva * The visible component of the periodontium inside the mouth * Described as: pink‚ pink-red‚ blue‚ purple‚ or pigmented * It can appear much darker when melanin pigmentation
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This technique was called staining‚ and was when one would stain nervous tissue before examining to under a microscope. However‚ several years later in 1873‚ Camillo Golgi came out with a new‚ improved staining method. The staining technique‚ allows the frequently transparent microbial cytoplasm’s to be seen with the light of the microscope by staining them. Through this new method there were several new discoveries‚ surrounding the nervous
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beat. Greenley’s Painting provides painting services in Sussex‚ Kent and New Castle Counties of Delaware and in parts of Maryland. They offer a wide range of painting services such as: foundation painting‚ oil based painting‚ metal painting‚ gel staining‚ epoxy floors‚
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Molecular Biology Problem Solver: A Laboratory Guide. Edited by Alan S. Gerstein Copyright © 2001 by Wiley-Liss‚ Inc. ISBNs: 0-471-37972-7 (Paper); 0-471-22390-5 (Electronic) 12 Electrophoresis Martha L. Booz Chemical Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . What Is the Safest Approach to Working with Acrylamide? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . What Are the Symptoms of Acrylamide Poisoning? . . . . . . What
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EXPERIMENT 1: PREPARATION OF BIOLOGICAL MATERIALS FOR MICROSCOPIC EXAMINATION Introduction: Cell is the smallest structural and functional unit of an organism‚ and is often called the building blocks of life. All organisms are composed of one or more cells‚ they are classified into 2 groups which are unicellular organisms and multicellular organisms. Plants and animals are made up of cells too. There are two basic classes of cells‚ prokaryotic and eukaryotic cells. The structurally simpler‚ prokaryotic
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Chapter One INTRODUCTION Herbal medicines tend to look primitive and unscientific when compared to synthetic (conventional) drugs‚ which are thought to be more reliable than those made from plants. Herbal medicine is still the mainstay of about 75-80% of the world population‚ mainly in the developing countries for primary health care (Kamboj‚ 2000). This is primarily because of the general belief that herbal drugs are without any side effects‚ besides being cheap and locally available. The
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giant cluster tightly packed together. 4. What is the difference between direct and indirect staining? (1) Direct staining stained bacteria with basic dye (methylene blue‚ carbol fuchsin‚ crystal violet‚ etc) which its coloring power is in positive ion‚ and reacts with the negatively charged cell. Thus‚ the bacterial cell will be stained with the basic dye’s color. In other words‚ direct staining
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This experiment is to determine the unknown DNA plasmid using restriction enzymes and conducting electrophoresis finally comparing the resulting fragments with the known restriction map. In this lab‚ it succeeds in showing the fragments. In this report we will discuss the‚ results‚ limitations and possible errors. Introduction In biology restriction enzymes are used in several ways to modify and manipulate DNA molecules. One common use is to compare pieces of DNA from one that is unknown‚ with fragments
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extracts: the propolis sample of the Brazilian native bee species Melipona quadrifasciata was obtained in May‚ 2013 in the city of Blumenau‚ SC‚ Brazil (26 ° 54’21.3 "S 49 ° 04’49.1 "W). In order to obtain a hydroalcoholic crude extract (HCE)‚ 284.3 grams of propolis were pulverized and macerated in 70% ethanol (m m-1)‚ left in a dark chamber for 7 days at room temperature‚ filtered in vacuum and taken to complete drying in a rotary evaporator with reduced pressure. In order to increase the yield of
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