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Seminal Vesicles: A saclike, glandular diverticulum on each ductus deferens in male vertebrates. It is united with the excretory duct and serves for temporary storage of semen. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
 Science Education: Essentials of Lab Animal Research

Diagnostic Necropsy and Tissue Harvest

JoVE Science Education

Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN

Many animal experiments rely on final data collection time points that are gathered from the harvesting and testing of organs and tissues. The use of appropriate methods for the collection of organs and tissues can impact the quality of the samples and the analysis of the data that is gleaned for the testing of the tissues. The method of euthanasia of the animal can also impact the quality of the samples. This manuscript will outline proper necropsy techniques for rats.

 JoVE In-Press

Standardized Colon Ascendens Stent Peritonitis in Rats - a Simple, Feasible Animal Model to Induce Septic Acute Kidney Injury

1Department of Anesthesiology and Intensive Care Medicine, University Medical Center, 2Department of Anesthesia and Critical Care, University of Würzburg, 3Department of General, Visceral, Vascular and Paediatric Surgery, Department of Surgery I, University of Würzburg, 4Department of Internal Medicine I, Division of Nephrology, University Hospital Würzburg, 5Department of Physiology and Pharmacology, West Virginia University School of Medicine

Video Coming Soon

JoVE 54448

 Science Education: Essentials of Lab Animal Research

Sterile Tissue Harvest

JoVE Science Education

Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN

In 1959 The 3 R's were introduced by W.M.S. Russell and R.L. Burch in their book The Principles of Humane Experimental Technique. The 3 R's are replacement, reduction, and refinement of the use of animals in research.1 The use of cell lines and tissue cultures that originated from research animals is a replacement technique, as it allows for many experiments to be conducted in vitro. Harvesting tissues and organs for use in cell and tissue cultures requires aseptic technique to avoid contamination of the tissues. Sterile harvest is also necessary for protein and RNA analysis and metabolic profiling of tissues. This manuscript will discuss the process of sterile organ harvest in rats and mice.

 Science Education: Essentials of Cell Biology

An Introduction to Endocytosis and Exocytosis

JoVE Science Education

Cells can take in substances from the extracellular environment by endocytosis and actively release molecules into it by exocytosis. Such processes involve lipid membrane-bound sacs called vesicles. Knowledge of the molecular architecture and mechanisms of both is key to understanding normal cell physiology, as well as the disease states that arise when they become defective. This video will first briefly review a few pivotal discoveries in the history of endo- and exocytosis research. Next, some key questions will be examined, followed by a discussion of the prominent methods used to investigate these problems, including cell labeling, fusion assays, and fluorescence imaging. Finally, it will explore current research being conducted by scientists in the field today.

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 JoVE In-Press

Preparation of Giant Vesicles Exhibiting Visible-light-induced Morphological Changes

1Department of Applied Chemistry, School of Applied Science, National Defense Academy of Japan, 2Department of Applied Physics, School of Applied Science, National Defense Academy of Japan, 3Department of Materials Science and Technology, Faculty of Engineering, Niigata University

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JoVE 54817

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 JoVE Biology

Reconstitution of a Transmembrane Protein, the Voltage-gated Ion Channel, KvAP, into Giant Unilamellar Vesicles for Microscopy and Patch Clamp Studies

1Institut Curie, Centre de Recherche, CNRS, UMR 168, PhysicoChimie Curie, Université Pierre et Marie Curie, 2Kavli Institute for Brain and Mind, University of California, San Diego, 3Molecular Physiology and Biophysics Section, National Institute for Neurological Disorders and Stroke, National Institute of Health


JoVE 52281

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 JoVE Neuroscience

Characterizing the Composition of Molecular Motors on Moving Axonal Cargo Using "Cargo Mapping" Analysis

1Department of Molecular and Experimental Medicine, Dorris Neuroscience Center, The Scripps Research Institute, 2Department of Cellular and Molecular Medicine, University of California San Diego, 3Department of Bioengineering, University of California San Diego, 4Department of Neurosciences, University of California San Diego School of Medicine


JoVE 52029

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 JoVE Neuroscience

SNARE-mediated Fusion of Single Proteoliposomes with Tethered Supported Bilayers in a Microfluidic Flow Cell Monitored by Polarized TIRF Microscopy

1Department of Cellular and Molecular Physiology, Yale University School of Medicine, 2Nanobiology Institute, Yale University, 3Department of Molecular Biophysics and Biochemistry, Yale University, 4Laboratoire de Neurophotonique, Université Paris Descartes, Faculté des Sciences Fondamentales et Biomédicales, Centre National de la Recherche Scientifique (CNRS)


JoVE 54349

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 JoVE Neuroscience

TIRFM and pH-sensitive GFP-probes to Evaluate Neurotransmitter Vesicle Dynamics in SH-SY5Y Neuroblastoma Cells: Cell Imaging and Data Analysis

1Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 2San Raffaele Scientific Institute and Vita-Salute University, 3CEND Center of Excellence in Neurodegenerative Diseases, Università degli Studi di Milano


JoVE 52267

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 JoVE Environment

A Noninvasive Method For In situ Determination of Mating Success in Female American Lobsters (Homarus americanus)

1Department of Biological Sciences, University of New Hampshire, 2Massachusetts Division of Marine Fisheries, 3Division of Natural Sciences & Mathematics, College of General Studies, Boston University, 4Rhode Island Nursing Institute, Middle College


JoVE 50498

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 JoVE Bioengineering

Formation of Biomembrane Microarrays with a Squeegee-based Assembly Method

1Department of Electrical and Computer Engineering, University of Minnesota, 2Department of Biomedical Engineering, University of Minnesota, 3Department of Neurology, Mayo Clinic College of Medicine, 4Department of Immunology, Mayo Clinic College of Medicine


JoVE 51501

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 JoVE Bioengineering

Lipid Bilayer Vesicle Generation Using Microfluidic Jetting

1Department of Mechanical Engineering, University of Michigan, 2Department of Biomedical Engineering, University of Michigan, 3Department of Biomedical Engineering, Institute for Cellular and Molecular Biology, The University of Texas at Austin, 4Department of Bioengineering, University of California, Berkeley, 5Physical Biosciences Division, Lawrence Berkeley National Laboratory


JoVE 51510

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 JoVE Bioengineering

Using Microfluidics Chips for Live Imaging and Study of Injury Responses in Drosophila Larvae

1Department of Molecular, Cellular and Developmental Biology, University of Michigan, 2Department of Biomedical Engineering, University of Michigan, 3Life Sciences Institute, University of Michigan, 4Department of Cell and Developmental Biology, University of Michigan, 5Department of Mechanical Engineering, University of Michigan


JoVE 50998

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