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Tetrazolium Salts: Quaternary salts derived from tetrazoles. They are used in tests to distinguish between reducing sugars and simple aldehydes, for detection of dehydrogenase in tissues, cells, and bacteria, for determination of corticosteroids, and in color photography. (From Mall's Dictionary of Chemistry, 5th ed, p455)
 JoVE Immunology and Infection

The Ex Vivo Culture and Pattern Recognition Receptor Stimulation of Mouse Intestinal Organoids

1Department of Biomedical Sciences and Pathobiology, Virginia Maryland College of Veterinary Medicine, Virginia Tech, 2Department of Biomedical Engineering, Cornell University, 3School of Electrical and Computer Engineering, Cornell University, 4Department of Biomedical Engineering, Duke University


JoVE 54033

 JoVE Bioengineering

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect

1Oral and Maxillofacial Surgery, Columbia University, 2Endodontics, Columbia University, 3Mechanical Engineering, Kyung Hee University, South Korea, 4Orthodontics, The Ohio State University, 5Pathology, Weill Cornell Medical College


JoVE 52947

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 JoVE Bioengineering

Lignin Down-regulation of Zea mays via dsRNAi and Klason Lignin Analysis

1The School of Plant Sciences, University of Arizona, 2Department of Chemical Engineering and Materials Science, DOE Great Lakes Bioenergy Research Center, Michigan State University, 3The Institute for Sustainable and Renewable Resources, The Institute for Advanced Learning and Research, 4Department of Plant, Soil and Microbial Sciences, Michigan State University


JoVE 51340

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 Science Education: Essentials of Organic Chemistry

Conducting Reactions Below Room Temperature

JoVE Science Education

Source: Laboratory of Dr. Dana Lashley - College of William and Mary

Demonstration by: Matt Smith

When new bonds are formed in the course of a chemical reaction, it requires that the involved species (atoms or molecules) come in very close proximity and collide into one another. The collisions between these species are more frequent and effective the higher the speed at which these molecules are moving. A widely used rule of thumb, which has its roots in the Arrhenius equation1, states that raising the temperature by 10 K will approximately double the rate of a reaction, and raising the temperature by 20 K will quadruple the rate: (1) Equation (1) is often found in its logarithmic form: (2) where k is the rate of the chemical reaction, A is the frequency factor (relating to frequency of molecular collisions), Ea is the activation energy required for the reaction, R is the ideal gas constant, and T is the temperature at which the r

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 JoVE Developmental Biology

Using Confocal Analysis of Xenopus laevis to Investigate Modulators of Wnt and Shh Morphogen Gradients

1Department of Biomedical Science, The Bateson Centre, University of Sheffield, 2Institute of Genetic Medicine, Newcastle University, 3Department of Cardiovascular Science, The Bateson Centre, University of Sheffield, 4School of Biochemistry, University of Bristol, 5Biology Department, University of York


JoVE 53162

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 JoVE Medicine

Combined Near-infrared Fluorescent Imaging and Micro-computed Tomography for Directly Visualizing Cerebral Thromboemboli

1Molecular Imaging and Neurovascular Research Laboratory, Dongguk University College of Medicine, 2Biomedical Research Center, Korea Institute of Science and Technology, 3Research Institute of Advanced Materials, Department of Materials Science and Engineering, Seoul National University, 4Departments of Radiology and Cancer Systems Imaging, University of Texas M.D. Anderson Cancer Center


JoVE 54294

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 JoVE Developmental Biology

Expression of Fluorescent Proteins in Branchiostoma lanceolatum by mRNA Injection into Unfertilized Oocytes

1Département de Biologie du Développement et Cellules Souches, Institut Pasteur, 2Laboratoire de Biologie du Développement de Villefranche-sur-Mer (UMR7009 CNRS/UPMC Univ Paris 06), Sorbonne Universités, 3Equipe Epigenetic Control of Normal and Pathological Hematopoiesis, Centre de Recherche en Cancérologie de Marseille, 4Unité de Dynamique des Interactions Membranaires Normales et Pathologiques, CNRS UMR5235/DAA/cc107/Université Montpellier II, 5Plateforme BioEmergences IBiSA FBI, CNRS-NED, Institut de Neurobiologie Alfred Fessard


JoVE 52042

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123458
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