JoVE Clinical and Translational Medicine
Use of Animal Model of Sepsis to Evaluate Novel Herbal Therapies
The Feinstein Institute for Medical Research, North Shore – LIJ Health System
Sepsis refers to a systemic inflammatory response syndrome resulting from a microbial infection, and can be simulated by a surgical technique termed cecal ligation and puncture (CLP). Here we describe a method to use CLP-induced animal model to screen medicinal herbs for therapeutic agents.
JoVE Clinical and Translational Medicine
Cecal Ligation Puncture Procedure
1Department of Microbiology and Immunology School of Medicine, Temple University, 2Department of Biochemistry, School of Medicine, Temple University
The mouse model of cecal ligation and puncture as a valuable tool for the study of human sepsis.
JoVE Immunology and Infection
Colon Ascendens Stent Peritonitis (CASP) - a Standardized Model for Polymicrobial Abdominal Sepsis
Department of Surgery, University of Greifswald
The Colon Ascendens Stent Peritonitis (CASP) is a highly standardized model for polymicrobial abdominal sepsis in rodents. This article describes the surgical procedure of CASP. The CASP model and its variants allow the systematic investigation of various problems concerning the subject of sepsis.
JoVE Immunology and Infection
Bioluminescence Imaging of NADPH Oxidase Activity in Different Animal Models
1Department of Medicine, Vanderbilt University School of Medicine, 2Departments of Medicine and Immunology, Roswell Park Cancer Institute, 3Department of Medicine, University at Buffalo School of Medicine
NADPH oxidase is the major source of reactive oxygen species (ROS) in phagocytes. Because of the ephemeral nature of ROS, it is difficult to measure and monitor ROS levels in living animals. A minimally invasive method for serial quantification of ROS in living mice is described.
JoVE Immunology and Infection
Experimental Endocarditis Model of Methicillin Resistant Staphylococcus aureus (MRSA) in Rat
1Department of Medicine, Division of Infectious Diseases, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, 2Geffen School of Medicine at UCLA
Experimental rat endocarditis model due to methicillin-resistant S. aureus.
JoVE Clinical and Translational Medicine
Intraductal Injection of LPS as a Mouse Model of Mastitis: Signaling Visualized via an NF-κB Reporter Transgenic
1Cancer Biology Department, Vanderbilt University Medical Center, 2Department of Medicine, Vanderbilt University Medical Center, 3Department of Pharmaceutical Sciences, University of Hawaii at Hilo College of Pharmacy
Described here is a technique in which lipopolysaccharide is injected into the lactating mouse mammary gland via the nipple to simulate mastitis, a condition commonly caused by bacterial infection. Lipopolysaccharide injection results in increased nuclear factor kappa B (NF-κB) signaling, visualized through bioluminescent imaging of an NF-κB luciferase reporter mouse.
JoVE General
Osmotic Avoidance in Caenorhabditis elegans: Synaptic Function of Two Genes, Orthologues of Human NRXN1 and NLGN1, as Candidates for Autism
1Departamento de Genética, Facultad de Ciencias, Universidad de Córdoba, 2Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)
Neurexins and neuroligins are membrane-neuron adhesion proteins which perform essential roles in synaptic differentiation and transmission. Neuroligin deficient mutants of C. elegans are defective in detecting osmotic strength, but when they also contain a mutation in the gene coding neurexin, they recover the wild type phenotype.
JoVE Clinical and Translational Medicine
Orthotopic Small Bowel Transplantation in Rats
1Department of Surgery, University of Bonn, Germany, 2Department of Surgery, Kyoto University Hospital
Small bowel transplantation has become an accepted treatment option for patients with irreversible intestinal failure. Our experimental model of orthotopic small bowel transplantation in rats serves as a reliable tool to address underlying immunologic and inflammatory processes that complicate intestinal transplantation.
JoVE General
Measurement Of Neuromagnetic Brain Function In Pre-school Children With Custom Sized MEG
Macquarie Centre for Cognitive Science, Macquarie University
The advent of MEG systems sized for young children opens important new opportunities to study brain development. The new system, together with a protocol that aligns experimental requirements with the capacities of children, can be used to study cognitive and language processes in healthy, awake children aged three to six.
JoVE General
Metabolic Pathway Confirmation and Discovery Through 13C-labeling of Proteinogenic Amino Acids
1Department of Energy, Environmental and Chemical Engineering, Washington University, 2Department of Biology, Washington University, 3Department of Energy, Environmental and Chemical Engineering and Department of Biology, Washington University
13C-isotope labeling is a useful technique for determining the cell central metabolism for various types of microorganisms. After cells have been cultured with a specific labeled substrate, GC-MS measurement can reveal functional metabolic pathways based on unique labeling patterns in proteinogenic amino acids.
JoVE Clinical and Translational Medicine
Longitudinal Evaluation of Mouse Hind Limb Bone Loss After Spinal Cord Injury using Novel, in vivo, Methodology
A longitudinal examination of bone loss in the femurs and tibiae of adult mice was performed following spinal cord injury using sequential low-dose X-ray scans. Tibia bone loss was detected throughout the study, while bone loss in the femur was not detected until 40 days post injury.
JoVE Clinical and Translational Medicine
In vivo Measurement of the Mouse Pulmonary Endothelial Surface Layer
Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado School of Medicine
The endothelial glycocalyx/endothelial surface layer is ideally studied using intravital microscopy. Intravital microscopy is technically challenging in a moving organ such as the lung. We demonstrate how simultaneous brightfield and fluorescent microscopy may be used to estimate endothelial surface layer thickness in a freely-moving in vivo mouse lung.
JoVE Neuroscience
Eye Movement Monitoring of Memory
1Rotman Research Institute, 2Department of Psychology, University of Toronto, 3Department of Psychiatry, University of Toronto
Eye movement monitoring (or eye tracking) reveals where in space the eyes linger, when and for how long. Here, we demonstrate how eye tracking can be used to investigate the integrity of memory in multiple participant populations, without requiring verbal, or otherwise explicit, reports.
JoVE Immunology and Infection
One-day Workflow Scheme for Bacterial Pathogen Detection and Antimicrobial Resistance Testing from Blood Cultures
1Department of Medical Microbiology, Maastricht University Medical Center, 2Department of Internal Medicine, Erasmus Medical Center
The design of a straightforward one-day workflow scheme for bacterial pathogen diagnostics enables the rapid recognition of bloodstream infections. The inclusion of eight clinically relevant bacterial targets and their antibiotic resistance profiles offers the clinician an initial insight on the same day, which can lead to more adequate therapy.
JoVE Neuroscience
Rodent Stereotaxic Surgery and Animal Welfare Outcome Improvements for Behavioral Neuroscience
1Department of Neuroscience, Section Anatomy, University Medical Center Groningen, University of Groningen, 2Animal Welfare Office, University of Groningen
Stereotaxic surgery on rodents allows for targeted administration of drugs or electrical stimulation and recordings in awake, behaving animals. In this video presentation we will demonstrate recent procedural refinements to this long-standing procedure that successfully improved survival rate and reduced post-surgical weight loss.
JoVE General
Ambulatory ECG Recording in Mice
1Department of Molecular Physiology and Biophysics, Baylor College of Medicine (BCM), 2The Margaret M. and Albert B. Alkek Department of Medicine, Baylor College of Medicine (BCM)
Telemetric ECG has emerged as an essential tool in evaluating animal models for cardiac arrhythmias and sudden cardiac death. Here, we present a stepwise guide to telemetric ECG recordings for application in long-term ambulatory ECG monitoring in mice.
JoVE Clinical and Translational Medicine
Use of a Hanging-weight System for Isolated Renal Artery Occlusion
1Department of Anesthesiology, University of Colorado, 2School of Medicine, University of Colorado, 3Department of Anesthesiology, Korea University College of Medicine
A precise murine model for acute kidney injury (AKI) due to ischemia is an important tool to investigate acute kidney injury and possibly find therapeutic tools to treat renal injury. The hanging weight system offers a tool for immediate and reliable renal artery occlusion and reperfusion without causing renal congestion.
JoVE General
Drawing Blood from Rats through the Saphenous Vein and by Cardiac Puncture
Department of Physiology and Biophysics, University of California, Irvine (UCI)
Blood draws are necessary in a large number of studies, for example to study the pharmacokinetics profile of a compound. Here, we demonstrate how to draw blood from rats using two techniques: blood draw from the saphenous vein or by cardiac puncture.
JoVE Clinical and Translational Medicine
Functional Assessment of Intestinal Motility and Gut Wall Inflammation in Rodents: Analyses in a Standardized Model of Intestinal Manipulation
Department of Surgery, University of Bonn
Postoperative ileus (POI) is a complication of abdominal surgery leading to increased morbidity and a prolonged hospital stay. Because prophylactic or therapeutic strategies are lacking intensified research is necessary. Therefore we established a standardized and feasible mouse model to investigate the pathophysiology of POI and to study potential therapeutic options.
JoVE Immunology and Infection
A 1.5 Hour Procedure for Identification of Enterococcus Species Directly from Blood Cultures
1Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Cente, 2Pasadena, CA, Southern California Permanente Medical Group, 3Detroit, Detroit Medical Center, 4Woburn, MA, AdvanDx
A rapid protocol for the direct identification of Enterococcus faecalis and other Enterococcus species from a positive blood culture using a Peptide Nucleic Acid fluorescent in situ hybridization assay (PNA FISH).
JoVE Bioengineering
Stretching Short Sequences of DNA with Constant Force Axial Optical Tweezers
1LSA Biophysics, University of Michigan, 2LSA Biophysics, Department of Physics, University of Michigan
We illustrate the use of a constant force axial optical tweezers to explore the mechanical properties of short DNA molecules. By stretching DNA axially, we minimize steric hindrances and artifacts arising in conventional lateral manipulation, allowing us to study DNA molecules as short as ~100 nm.
JoVE Clinical and Translational Medicine
A Low Mortality Rat Model to Assess Delayed Cerebral Vasospasm After Experimental Subarachnoid Hemorrhage
1Department of Neurosurgery, SUNY Upstate Medical University, 2Department of Neuroscience and Physiology, SUNY Upstate Medical University
Aneurysmal subarachnoid hemorrhage (SAH) is bleeding that occurs into the subarachnoid space when an aneurysm ruptures. While the morbidity and mortality from this event has been on a decline due to improved treatment approaches, the risk of vasospasm after subarachnoid hemorrhage continues to be the same as it was several years ago. The importance of establishing a comprehensive and reproducible animal model to identify initiating events of cerebral vasospasm has been the focus of research since the first use of rats in an experimental vasospasm model in 1979 by Barry et al. Early work in rats demonstrated that a single injection of autologous blood into the cisterna magna led to acute (within minutes) but not delayed cerebral vasospasm 3, 6, 14. Here we characterize a low mortality SAH rat model that results in reproducible delayed vasospasm.
JoVE Neuroscience
Revealing Neural Circuit Topography in Multi-Color
We provide a practical guide for delivering tracers in vivo and use the spinocerebellar pathway as a model system to demonstrate essential steps for successful neuronal circuit analysis in mice. We describe in detail our versatile tracing protocol that exploits wheat germ agglutinin (WGA) conjugated to Alexa fluorophores.
JoVE Clinical and Translational Medicine
Identification of Sleeping Beauty Transposon Insertions in Solid Tumors using Linker-mediated PCR
1Department of Obstetrics, Gynecology & Women's Health, Masonic Cancer Center, University of Minnesota, Minneapolis, 2Department of Genetics, Cell Biology & Development, Center for Genome Engineering, University of Minnesota, Minneapolis
A method of identifying unknown drivers of carcinogenesis using an unbiased approach is described. The method uses the Sleeping Beauty transposon as a random mutagen directed to specific tissues. Genomic mapping of transposon insertions that drive tumor formation identifies novel oncogenes and tumor suppressor genes
JoVE General
Heterotopic and Orthotopic Tracheal Transplantation in Mice used as Models to Study the Development of Obliterative Airway Disease
1Transplant and Stem Cell Immunobiology Lab (TSI), University Heart Center Hamburg, 2CVRC, University Hospital Hamburg, 3Department of CT Surgery, Stanford University School of Medicine
This video shows and compares two experimental models to study the development of obliterative airway disease (OAD) in mice, the heterotopic and orthotopic tracheal transplantation model.
JoVE General
Small Bowel Transplantation In Mice
Department of Surgery, University of California, San Francisco - UCSF
The mouse small bowel transplantation model has been recognized as an important tool to study mechanismes of immune rejection and screen new immunosuppressive drugs. However, this model is limited to use because the techniques involved is an extremely technically challenge. Now we introduce the modified technique.
JoVE General
Batch Immunostaining for Large-Scale Protein Detection in the Whole Monkey Brain
1Cognitive Neuroscience Unit, Montreal Neurological Institute, 2Ècole d’Optomètrie, Universitè de Montrèal, 3Department of Psychology, McGill University
Large-scale immunodetection of target proteins across the entire primate brain is possible by employing novel tissue embedding and sectioning methods combined with the use of creative apparatus for batch staining of multiple free-floating sections at a given time.
JoVE General
Computer-Generated Animal Model Stimuli
Center for the Integrative Study of Animal Behaviour, Macquarie University
Computer-generated stimuli using the Jacky dragon as a model.
JoVE General
Evaluation of Muscle Function of the Extensor Digitorum Longus Muscle Ex vivo and Tibialis Anterior Muscle In situ in Mice
Department of Molecular Microbiology and Immunology, School of Medicine, University of Missouri
Changes in limb muscle contractile and passive mechanical properties are important biomarkers for muscle diseases. This manuscript describes physiological assays to measure these properties in the murine extensor digitorum longus and tibialis anterior muscles.
JoVE Immunology and Infection
PRP as a New Approach to Prevent Infection: Preparation and In vitro Antimicrobial Properties of PRP
1Department of Orthopaedics, School of Medicine, West Virginia University, 2Department of Orthopaedics, Stem Cell Research Center, University of Pittsburgh, 3WVNano Initiative, 4Mary Babb Randolph Cancer Center
Implant-associated infection is a significant clinical complication. This study describes an approach using platelet-rich plasma (PRP) to prevent implant-associated infections, presents the protocol for preparing PRP with constant platelet concentration, and reports the newly identified antimicrobial properties of PRP and related protocols for examining such antimicrobial properties in vitro.
JoVE Clinical and Translational Medicine
Modeling Stroke in Mice - Middle Cerebral Artery Occlusion with the Filament Model
Filamentous occlusion of the Middle cerebral artery is a common model for studying ischemic stroke in mice.
JoVE Clinical and Translational Medicine
Multi-modal Imaging of Angiogenesis in a Nude Rat Model of Breast Cancer Bone Metastasis Using Magnetic Resonance Imaging, Volumetric Computed Tomography and Ultrasound
1Department of Medical Physics in Radiology, German Cancer Research Center, Heidelberg, Germany, 2Unit of Chemotherapy and Toxicology, German Cancer Research Center, Heidelberg, Germany
In the pathogenesis of bone metastasis, angiogenesis is a crucial process and therefore represents a target for imaging and therapy. Here, we present a rat model of site-specific breast cancer bone metastasis and describe strategies to non-invasively image angiogenesis in vivo using magnetic resonance imaging, volumetric computed tomography and ultrasound.
JoVE Neuroscience
Preparation of Living Isolated Vertebrate Photoreceptor Cells for Fluorescence Imaging
Storm Eye Institute, Medical University of South Carolina
A method is described for the preparation of single living photoreceptor cells from different vertebrate species for fluorescence imaging. The method can be used to image the fluorescence of endogenous fluorophores, such as NADH or vitamin A, or that of exogenously added fluorescent dyes sensitive to Ca2+ or other factors.
JoVE Clinical and Translational Medicine
Modeling Colitis-Associated Cancer with Azoxymethane (AOM) and Dextran Sulfate Sodium (DSS)
Division of Gastroenterology, Washington University School of Medicine
We demonstrate a protocol in which administration of the genotoxic agent azoxymethane (AOM) followed by three cycles of the pro-inflammatory agent dextran sulfate sodium (DSS) rapidly and consistently generates colon tumors in mice with morphologic and molecular similarities to those seen in human colitis-associated cancer.
JoVE Neuroscience
Recording Electrical Activity from Identified Neurons in the Intact Brain of Transgenic Fish
Department of Physiology, University of California, Los Angeles
In this video, we will demonstrate how to record electrical activity from identified single neurons in a whole brain preparation, which preserves complex neural circuits. We use transgenic fish in which gonadotropin-releasing hormone (GnRH) neurons are genetically tagged with a fluorescent protein for identification in the intact brain preparation.
JoVE Neuroscience
Surgical Transplantation of Mouse Neural Stem Cells into the Spinal Cords of Mice Infected with Neurotropic Mouse Hepatitis Virus
1Department of Molecular Biology and Biochemistry, University of California, Irvine, 2Sue and Bill Gross Stem Cell Center, University of California, Irvine, 3Institute for Immunology, University of California, Irvine
The transplantation of mouse neural stem cells (NSCs) into the spinal cords of mice with established demyelination is detailed. The preparation of NSCs, the laminectomy of thoracic vertebra 9 (T9), and transplantation of NSCs is outlined along with the pre- and post-operative care of the mice.
JoVE Clinical and Translational Medicine
Improved Visualization of Lung Metastases at Single Cell Resolution in Mice by Combined In-situ Perfusion of Lung Tissue and X-Gal Staining of lacZ-Tagged Tumor Cells
Laboratory for Orthopedic Research, Balgrist University Hospital, Zurich
The novel protocol reported in the present study allows selective detection of lung metastases at single cell resolution in mice by combined in-situ lung perfusion and fixation and X-Gal staining of lacZ-tagged tumor cells.
JoVE Bioengineering
Endothelialized Microfluidics for Studying Microvascular Interactions in Hematologic Diseases
1Department of Pediatrics, Emory University School of Medicine, 2Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, 3Aflac Cancer Center and Blood Disorders Service of Children's Healthcare of Atlanta, 4Winship Cancer Institute of Emory University
A method to culture an endothelial cell monolayer throughout the entire inner 3D surface of a microfluidic device with microvascular-sized channels (<30 μm) is described. This in vitro microvasculature model enables the study of biophysical interactions between blood cells, endothelial cells, and soluble factors in hematologic diseases.
JoVE Clinical and Translational Medicine
Training a Sophisticated Microsurgical Technique: Interposition of External Jugular Vein Graft in the Common Carotid Artery in Rats
Neointimal hyperplasia is the primary cause of stenosis in arterialized veins. We propose a new protocol whereby the right external jugular vein is grafted using the cuff technique in the common carotid artery of Sprague Dawley rats. The survival rate was 100 % at the time point of sacrifice.
JoVE Immunology and Infection
Granulocyte-dependent Autoantibody-induced Skin Blistering
1Department of Dermatology, University of Freiburg, 2Kepler High School Freiburg, 3Centre for Biological Signalling Studies (BIOSS), University of Freiburg
In the animal model described in our present work, purified IgG antibodies against a stretch of 200 amino acids (aa 757-967) of collagen VII are injected repeatedly into mice reproducing the blistering phenotype as well as the histo- and immunopathological features characteristic to human epidermolysis bullosa acquisita (EBA)1.
JoVE Clinical and Translational Medicine
Optimized System for Cerebral Perfusion Monitoring in the Rat Stroke Model of Intraluminal Middle Cerebral Artery Occlusion
Department of Neuroscience and Biomedical Technologies, University of Milano Bicocca
Cerebral perfusion monitoring has been demonstrated to improve accuracy in ischemic stroke models. Technical difficulties often limit the use of this essential tool for cerebrovascular research. In this video, an optimized system is shown to obtain a single or multi-site hemodynamic monitoring during intraluminal middle cerebral artery occlusion in rats.
JoVE Clinical and Translational Medicine
Development of Obliterative Bronchiolitis in a Murine Model of Orthotopic Lung Transplantation
1Departments of Medicine, Microbiology and Immunology, Indiana University School of Medicine, 2Center for Immunobiology, Indiana University School of Medicine
Obliterative bronchiolitis is the key impediment to the long-term survival of lung transplant recipients and the lack of a robust preclinical model precludes examining obliterative bronchiolitis immunopathogenesis. Unlike other solid organ transplants, vascularized mouse lung transplantation has only recently been developed. Here we show our independently developed obliterative bronchiolitis model after murine orthotopic single-lung transplantation.
JoVE Clinical and Translational Medicine
Fixed Volume or Fixed Pressure: A Murine Model of Hemorrhagic Shock
Department of Surgery, University of Pittsburgh
The Hemorrhagic Shock model has been a reliable and reproducible resource facilitating the identification and understanding of signaling cascades associated with inflammation and end-organ damage after trauma. This article provides a step-by-step description of surgical and mechanical aspects associated with the Hemorrhagic Shock experimental procedure in mice.
JoVE Clinical and Translational Medicine
A Novel Surgical Approach for Intratracheal Administration of Bioactive Agents in a Fetal Mouse Model
1Molecular Virology and Gene Therapy, KU Leuven, 2Department of Woman and Child, KU Leuven, 3Neurobiology and Gene Therapy, KU Leuven, 4Division of Nuclear Medicine, KU Leuven, 5Biomedical NMR Unit/ MoSAIC, KU Leuven
We developed a novel surgical approach for intratracheal administration of bioactive agents into the mouse fetus. The delivery route is more efficient in targeting the fetal mouse lungs than the commonly used intra-amniotic injection. This procedure has to date not been described in a mouse model.
JoVE General
A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice
1Department of Medicine, Baylor College of Medicine (BCM), 2Millenium Premier Group, 3Department of Immunology, Baylor College of Medicine (BCM)
Repeated measurements of rodent respiratory physiology and sampling of airway inflammatory cells are desirable, but generally not feasible. Here we describe a repeatable method for orally intubating mice that permits repeated measurements of airway hyperreactivity and sampling of airway inflammatory cells.
JoVE Clinical and Translational Medicine
Monitoring Tumor Metastases and Osteolytic Lesions with Bioluminescence and Micro CT Imaging
Imaging Biology Research and Development, Caliper Life Sciences
An experimental mouse model of bone metastasis was established following intracardiac delivery of luciferase expressing mammary tumor cells. Tumor development and resulted osteolytic lesion were monitored longitudinally with bioluminescence and micro CT imaging.
JoVE General
Performing Custom MicroRNA Microarray Experiments
1Department of Pharmacology, University of Minnesota, 2Masonic Cancer Center, University of Minnesota
A simple procedure of performing custom microRNA microarray experiments is described. The steps include isolating RNA, labeling RNA and reference DNA, hybridizing the samples to microarrays, scanning the microarrays, quantifying and analyzing hybridization signals.
JoVE Immunology and Infection
In Vivo Imaging Systems (IVIS) Detection of a Neuro-Invasive Encephalitic Virus
Experimental Pathology, University of Texas Medical Branch
Utilizing luciferase and in vivo imaging systems (IVIS) as a novel means to identify disease endpoints before clinical developments occur. IVIS has allowed us to visualize in real time the invasion of encephalitic viruses over multiple days, providing a more accurate disease model for future study. It has also allowed us to identify the potential protective features of antivirals and vaccines faster than currently utilized animal models. The capability to utilize individual animals over multiple time points ensures reduced animal requirements, costs, and overall morbidity to the animals utilized ensuring a more humane and more scientific means of disease study.
JoVE Neuroscience
Direct Intraventricular Delivery of Drugs to the Rodent Central Nervous System
Department of Neurology, Washington University in St. Louis School of Medicine
We describe a method to target drugs to the central nervous system by either implanting a catheter or performing a bolus injection into the right lateral ventricle in mice. We focus specifically on the delivery of antisense oligonucleotides. This technique is readily adaptable to other drugs and to rats.
JoVE Clinical and Translational Medicine
Modeling Intracerebral Hemorrhage in Mice: Injection of Autologous Blood or Bacterial Collagenase
1Department of Physiology and Pharmacology, Loma Linda University School of Medicine, 2College of Natural and Agricultural Sciences, University of California, Riverside, 3Department of Anesthesiology, Loma Linda University School of Medicine, 4Department of Neurosurgery, Loma Linda University School of Medicine
Clinically relevant animal models of intracerebral hemorrhage (ICH) are needed to extend our knowledge of hemorrhagic stroke and to examine novel therapeutic strategies. In this study, we describe and evaluate two ICH models that implement unilateral injections of either autologous whole blood or bacterial collagenase into the basal ganglia (corpus striatum) of mice.
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