Muscle, Skeletal:
A subtype of striated muscle, attached by Tendons to the Skeleton. Skeletal muscles are innervated and their movement can be consciously controlled. They are also called voluntary muscles.
JoVE General
Adult and Embryonic Skeletal Muscle Microexplant Culture and Isolation of Skeletal Muscle Stem Cells
School of Biosciences, University of Birmingham
The micro-dissected explants technique is a robust and reliable method for isolating proliferative skeletal muscle cells from juvenile, adult or embryonic muscles as a source of skeletal muscle stem cells. Uniquely, these cells have been clonally derived to produce skeletal muscle stem cell lines used for in vivo transplantation.
JoVE General
Purification of Progenitors from Skeletal Muscle
The Biomedical Research Centre, University of British Columbia
Method for the enzymatic dissociation, surface labeling and purification by flow cytometry of fibro/adipogenic and myogenic progenitors from murine skeletal muscle.
JoVE Clinical and Translational Medicine
Myo-mechanical Analysis of Isolated Skeletal Muscle
1Cardiovascular Research Institute, University of California San Francisco, 2Department of Pediatrics, University of California San Francisco, 3Department of Biology, San Francisco State University, 4Department of Medicine, University of California San Francisco, 5Eli and Edythe Broad Center of Regeneration Medicine & Stem Cell Research, University of California San Francisco
To assess the in vivo effects of therapeutic interventions for muscle disease, methods are needed to quantitate force generation and fatigability in treated muscle. We detail an approach to evaluating myo-mechanical properties in explanted mouse hindlimb muscle. This analysis provides a robust approach to quantitating the effects of genetic modification on muscle function, as well as comparison of therapies in mouse models of muscle disease.
JoVE General
Ex Vivo Assessment of Contractility, Fatigability and Alternans in Isolated Skeletal Muscles
1Department of Physiology and Biophysics, UMDNJ-Robert Wood Johnson Medical School, 2Muscle Biology Research Group, University of Missouri-Kansas City, 3Pharmacology division, College of Pharmacy, DHLRI, Ohio State University
We describe a method to directly measure muscle force, muscle power, contractile kinetics and fatigability of isolated skeletal muscles in an in vitro system using field stimulation. Valuable information on Ca2+ handling properties and contractile machinery of the muscle can be obtained using different stimulating protocols.
JoVE General
Procedures for Rat in situ Skeletal Muscle Contractile Properties
Faculty of Kinesiology, University of Calgary
This video demonstrates the surgical preparation and procedures needed to study the contractile responses of the rat medial gastrocnemius muscle preparation in situ. This preparation allows measurement of skeletal muscle contractile properties under physiological conditions. The animal is anesthetized and the muscle is separated from surrounding tissue at its distal end. The Achilles tendon is attached to a force transducer, allowing measurement of the muscle’s contractile response at 37 degrees C with an intact circulation.
JoVE Clinical and Translational Medicine
An in vivo Rodent Model of Contraction-induced Injury and Non-invasive Monitoring of Recovery
1Department of Physiology, University of Maryland School of Medicine, 2Department of Orthopaedics, University of Maryland School of Medicine, 3Department of Diagnostic Radiology, University of Maryland School of Medicine
An in vivo animal model of injury is described. The method takes advantage of the subcutaneous position of the fibular nerve. Velocity, timing of muscle activation, and arc of motion are all pre-determined and synchronized using commercial software. Post injury changes are monitored in vivo using MR imaging/spectroscopy.
JoVE Bioengineering
Engineering Skeletal Muscle Tissues from Murine Myoblast Progenitor Cells and Application of Electrical Stimulation
Engineered muscle tissue has great potential in regenerative medicine, as disease model and also as an alternative source for meat. Here we describe the engineering of a muscle construct, in this case from mouse myoblast progenitor cells, and the stimulation by electrical pulses.
JoVE Clinical and Translational Medicine
A Murine Model of Muscle Training by Neuromuscular Electrical Stimulation
1Department of Physical Medicine and Rehabilitation, University of Pittsburgh, 2Department of Physical Therapy, University of Pittsburgh, 3McGowan Institute for Regenerative Medicine, University of Pittsburgh
A murine model of neuromuscular electrical stimulation (NMES), a safe and inexpensive clinical modality, to the anterior compartment muscles is described. This model has the advantage of modifying a readily available clinical device for the purpose of eliciting targeted and specific muscle contractions in mice.
JoVE General
Isometric and Eccentric Force Generation Assessment of Skeletal Muscles Isolated from Murine Models of Muscular Dystrophies
1Department of Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania, 2Department of Physiology, Perelman School of Medicine, University of Pennsylvania, 3Department of Anatomy and Cell Biology, School of Dental Medicine, School of Dental Medicine, University of Pennsylvania
Muscle function measurements contribute to the evaluation of potential therapeutics for muscle pathology, as well as to the determination of mechanisms underlying physiology of this tissue. We will demonstrate the preparation of the extensor digitorum longus and diaphragm muscles for functional testing. Protocols for isometric and eccentric contractions will be shown, as well as differences in results between dystrophic muscles, representing a pathological state, and wildtype muscles.
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 General
Isolating Stem Cells from Soft Musculoskeletal Tissues
1Stem Cell Research Center, Childrens Hospital of Pittsburgh of UPMC, 2Department of Bioengineering, University of Pittsburgh, 3Department of Orthopedic Surgery, University of Pittsburgh, 4Department of Pathology, University of Pittsburgh, 5Department of Molecular Genetics & Biochemistry, University of Pittsburgh
Isolating adult stem cells from musculoskeletal soft tissues based on the cell's adherence speed to flask.
JoVE General
The ex vivo Isolated Skeletal Microvessel Preparation for Investigation of Vascular Reactivity
An ex vivo preparation is described for isolation of the largest gracilis muscle resistance arterioles for interrogation of both vascular responses to vasoactive stimuli and the assessment of basic structural properties via passive wall mechanics.
JoVE General
DNA Transfection of Mammalian Skeletal Muscles using In Vivo Electroporation
Department of Physiology, David Geffen School of Medicine, University of California, Los Angeles
We describe detailed procedures for the efficient transfection of plasmid DNA into the fibers of foot muscles of live mice using electroporation and the subsequent visualization of protein expression using fluorescence microscopy.
JoVE General
Noninvasive In Vivo Small Animal MRI and MRS: Basic Experimental Procedures
1Department of Radiology, University of Washington, 2Department of Bioengineering, University of Washington
This work describes basic procedures of noninvasive small animal MRI and MRS in vivo.
JoVE Neuroscience
Paired Patch Clamp Recordings from Motor-neuron and Target Skeletal Muscle in Zebrafish
Vollum Institute, Oregon Health and Sciences University
Larval zebrafish represent the first vertebrate model system to allow simultaneous patch clamp recording from a spinal motor-neuron and target skeletal muscle. This video demonstrates the microscopic methods used to identify a segmental CaP motor-neuron and target muscle cells as well as the methodologies for recording from each cell type.
JoVE General
Mitochondrial Isolation from Skeletal Muscle
Department of Physiology, University of Kentucky
This protocol describes a procedure to study the respiration of mitochondria isolated from skeletal muscles. This method was adapted from Scorrano et al. (2007). The mitochondrial isolation procedure requires about 2 hours. The mitochondrial respiration can be completed in about 1 hour.
JoVE Immunology and Infection
Intravital Microscopy of the Inguinal Lymph Node
1Interdisciplinary Science, University of Northern British Columbia, 2Northern Medical Program, University of Northern British Columbia
A technique for performing intravital microscopy of the inguinal lymph node (LN) is outlined. Such technique allows for real-time, in vivo study of the lymph node microvasculature and structure both during homeostasis and infection. This technique can be adapted to cell trafficking studies and to other lymph node sites.
JoVE General
Isolation and Culture of Individual Myofibers and their Satellite Cells from Adult Skeletal Muscle
1Sprott Center for Stem Cell Research, Ottawa Hospital Research Institute, 2Department of Cellular and Molecular Medicine, University of Ottawa
Isolation and culture of myofibers is the gold standard in vitro system to study the transition of satellite cells through quiescence, activation and differentiation. Importantly, the single myofiber culture system preserves the myofiber/stem cell association, which is an essential component of the muscle stem cell niche.
JoVE General
Fabrication of Myogenic Engineered Tissue Constructs
1Department of Anesthesiology, Children's Hospital Boston and Harvard Medical School, 2Perioperative and Pain Medicine, Children's Hospital Boston and Harvard Medical School
Here, we demonstrate fabrication of collagen-based, tissue constructs containing skeletal myoblasts. These 3-D engineered constructs may be used to replace or repair tissues in vivo. For our purposes, we have designed these as an atrioventricular electrical conduit for the repair of complete heart block[1].
JoVE General
Tracking Dynamics of Muscle Engraftment in Small Animals by In Vivo Fluorescent Imaging
1Department of Anesthesia, Brigham and Woman's Hospital, 2Department of Radiology, Brigham and Woman's Hospital
We describe an in vivo fluorescence imaging protocol to monitor muscle regeneration by GFP-labeled myoblasts after transplantation into skeletal muscles of both healthy and dystrophic mice. This protocol can be adapted to study muscle regeneration by transplantation of other types of cells and in other muscular conditions as well.
JoVE General
The Mouse Cremaster Muscle Preparation for Intravital Imaging of the Microcirculation
1Department of Medical Pharmacology and Physiology, University of Missouri, 2Dalton Cardiovascular Research Center, University of Missouri
A tissue preparation is described for visualization and experimental manipulation of the living microcirculation. In anesthetized male mice, the thin, highly vascularized cremaster muscle is prepared for intravital microscopy to study microvascular networks including arterioles, capillaries and venules. This preparation is readily adapted for rats and hamsters.
JoVE General
Microiontophoresis and Micromanipulation for Intravital Fluorescence Imaging of the Microcirculation
1Department of Medical Pharmacology and Physiology, University of Missouri, 2Dalton Cardiovascular Research Center, University of Missouri
Microiontophoresis entails movement of ions from a micropipette in response to a difference in electrical potential between the inside and outside of the micropipette. Biologically active molecules are thereby delivered in proportion to electrical current. We illustrate acetylcholine microiontophoresis in conjunction with micromanipulation to study endothelium-dependent vasodilation in the microcirculation.
JoVE General
Fluorescence-based Measurement of Store-operated Calcium Entry in Live Cells: from Cultured Cancer Cell to Skeletal Muscle Fiber
1Department of Physiology and Biophysics, Confocal Microscopy and Cell Imaging Core, Robert Wood Johnson Medical School, 2Department of Physiology and Biophysics, Robert Wood Johnson Medical School, 3Muscle Biology Research Group-MUBIG Schools of Nursing & Medicine, University of Missouri-Kansas City
The extent of store-operated Ca2+ entry (SOCE) can be monitored using fluorescent Ca2+ indicators. Mn2+ quenching of such indicators assays SOCE in cultured cells and skeletal muscle fibers. A technique allowing spatial and temporal resolution of SOCE by confocal imaging of mechanically skinned muscle fibers is also described.
JoVE Clinical and Translational Medicine
Molecular Imaging to Target Transplanted Muscle Progenitor Cells
1Imaging Program, Lawson Health Research Institute, 2Department of Anatomy and Cell Biology, Western University, 3Department of Medical Biophysics, Western University
A non-invasive means to evaluate the success of myoblast transplantation is described. The method takes advantage of a unified fusion reporter gene composed of genes whose expression can be imaged with different imaging modalities. Here, we make use of a fluc reporter gene sequence to target cells via bioluminescence imaging.
JoVE Clinical and Translational Medicine
Murine Spinotrapezius Model to Assess the Impact of Arteriolar Ligation on Microvascular Function and Remodeling
1Department of Biomedical Engineering, University of Virginia, 2Department of Biomedical Engineering, California Polytechnic State University, 3Office of Animal Welfare, University of Virginia, 4Department of Biomedical Engineering & Institute for Computational Medicine, Johns Hopkins University
We demonstrate a novel arterial ligation model in murine spinotrapezius muscle, including a step-by-step procedure and description of required instrumentation. We describe the surgery and relevant outcome measurements relating to vascular network remodeling and functional vasodilation using intravital and confocal microscopy.
JoVE General
In vivo Micro-circulation Measurement in Skeletal Muscle by Intra-vital Microscopy
1Department of Anesthesiology and Critical Care, Shriners Hospital for Children, Massachusetts General Hospital, and Harvard Medical School, 2Department of Geriatric Medicine, Graduate School of Medicine, The University of Tokyo
A new versatile method for observation of microcirculation is presented. It is considered suitable for long-term observation, and for combination with pharmacophysiological or molecular biological interventions.
JoVE Clinical and Translational Medicine
Skeletal Muscle Gender Dimorphism from Proteomics
1Center for Proteomics, Smith College, 2Department of Molecular Biophysics and Biochemistry, Yale University, 3Department of Chemistry, Smith College, 4Department of Biological Sciences and Center for Proteomics, Smith College
A straight-forward set of methods to isolate and determine the identity of the most abundant proteins expressed in skeletal muscle. About 800 spots are discerned on a two-dimensional gel from 10 mg muscle; this allows for the determination of gender-specific protein expression. These methods will give equivalent results in most tissues.
JoVE General
Chromatin Immunoprecipitation Assay for Tissue-specific Genes using Early-stage Mouse Embryos
Department of Cell Biology, University of Massachusetts Medical School
We demonstrate a chromatin immunoprecipitation (ChIP) method to identify factor interactions at tissue-specific genes during or after the onset of tissue-specific gene expression in mouse embryonic tissue. This protocol should be widely applicable for the study of tissue-specific gene activation as it occurs during normal embryonic development.
JoVE General
Laser-inflicted Injury of Zebrafish Embryonic Skeletal Muscle
Max Delbrück Center for Molecular Medicine
The method presented here comprises the precise injury of live zebrafish embryos with high-energy laser pulses and the subsequent analysis of these injuries and their recovery with time. We also show how genetically labeled single or groups of skeletal muscle cells can be tracked during and after laser light induced damage.
JoVE General
Respirometric Oxidative Phosphorylation Assessment in Saponin-permeabilized Cardiac Fibers
1Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Calgary, 2Faculty of Kinesiology, University of Calgary
Saponin-permeabilized fiber preparation in conjunction with respirometric oxidative phosphorylation analysis provides integrative assessment of mitochondrial function. Mitochondrial respiration in physiological and pathological states can reflect various regulatory influences including mitochondrial interactions, morphology and biochemistry.
JoVE Clinical and Translational Medicine
Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
Department of Biomedical Physiology and Kinesiology, Simon Fraser University
We describe a "gold standard" for evaluating orthostatic tolerance (OT) using tilt testing with combined lower body negative pressure (LBNP). This can be combined with non-invasive evaluations of cardiovascular reflex control. Normal and abnormal responses are defined.
JoVE Clinical and Translational Medicine
In Vivo Canine Muscle Function Assay
1Department of Neurology and Wake Forest Institute for Regenerative Medicine, Wake Forest University, 2Department of Human Nutrition, Foods and Exercise, Virginia Polytechnic Institute and State University, 3Departments of Pathology and Laboratory Medicine and Neurology and the Gene Therapy Center , University of North Carolina-Chapel Hill
We describe a minimally-invasive and painless method to measure canine hindlimb muscle strength and muscle response to repeated eccentric contractions.
JoVE General
Mosaic Zebrafish Transgenesis for Evaluating Enhancer Sequences
Department of Cell and Developmental Biology, University of Pennsylvania
We demonstrate our approach to finding potential enhancer elements from developmentally regulated genes and evaluating their function through mosaic zebrafish transgenesis.
JoVE General
Visualization of Mitochondrial Respiratory Function using Cytochrome C Oxidase / Succinate Dehydrogenase (COX/SDH) Double-labeling Histochemistry
1Department of Neuroscience, Karolinska Institutet, 2National Institute on Drug Abuse (NIDA)
The cytochrome c oxidase/sodium dehydrogenase (COX/SDH) double-labeling method allows for direct visualization of mitochondrial respiratory enzyme deficiencies in fresh-frozen tissue sections. This is a straightforward histochemical technique and is useful in investigating mitochondrial diseases, aging, and aging-related disorders.
JoVE General
Quantitative Measurement of GLUT4 Translocation to the Plasma Membrane by Flow Cytometry
Department of Molecular Physiology and Biophysics, Baylor College of Medicine
This protocol describes a rapid technique to quantify the translocation of GLUT4 from the cytoplasm to the plasma membrane of cells by flow cytometry.
JoVE Bioengineering
A Chitosan Based, Laser Activated Thin Film Surgical Adhesive, 'SurgiLux': Preparation and Demonstration
The fabrication of a novel, flexible thin film surgical adhesive from FDA approved ingredients, chitosan and indocyanine green is described. Bonding of this adhesive to collagenous tissue through a simple activation process with a low-powered infra-red laser is demonstrated.
JoVE Clinical and Translational Medicine
Hyperinsulinemic-euglycemic Clamps in Conscious, Unrestrained Mice
1Diabetes and Obesity Research Center, Sanford-Burnham Medical Research Institute at Lake Nona, 2Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, 3Vanderbilt Mouse Metabolic Phenotyping Center, Vanderbilt University School of Medicine, 4Department of Pediatrics and Cellular and Integrative Physiology, Indiana University School of Medicine
The hyperinsulinemic-euglycemic clamp, or insulin clamp, is the gold standard for assessing insulin action in vivo. A method for performing insulin clamps in mice is described. This includes a method for arterial catheterization that permits experiments to be performed in conscious, unrestrained mice with minimal stress.
JoVE Clinical and Translational Medicine
Orthotopic Xenografting of Human Luciferase-Tagged Malignant Peripheral Nerve Sheath Tumor Cells for in vivo Testing of Candidate Therapeutic Agents
1Department of Pathology, University of Alabama at Birmingham - UAB, 2Department of Radiology, University of Alabama at Birmingham - UAB, 3Department of Cell Biology and Neurobiology, University of Alabama at Birmingham - UAB
A method for reliably grafting luciferase-tagged human malignant peripheral nerve sheath tumor cells into the sciatic nerve of immunodeficient mice is described. The use of bioluminescence imaging to demonstrate proper establishment of tumor grafts and criteria for random segregation of animals into study groups are also discussed.
JoVE General
Isolation and Differentiation of Stromal Vascular Cells to Beige/Brite Cells
1UCSF Diabetes Center and Department of Cell and Tissue Biology, University of California, San Francisco, 2Department of Biology, University of Copenhagen, Denmark, 3National Institute of Nutrition and Seafood Research, Bergen, Norway
Primary white preadipocytes isolated from white adipose tissues in mice can be differentiated into beige/brite cells. Presented here is a reliable cellular model system to study the molecular regulation of "browning" of white fat.
JoVE Neuroscience
Magnetic Resonance Spectroscopy of live Drosophila melanogaster using Magic Angle Spinning
1NMR Surgical Laboratory, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, 2Shriners Burn Institute, 3Department of Radiology, Athinoula A. Martinos Center of Biomedical Imaging, Harvard Medical School, 4Molecular Surgery Laboratory, Department of Surgery, Massachusetts General Hospital, Harvard Medical School
This technique enables the use of high-resolution magic angle spinning proton MR spectroscopy (HRMAS 1H-MRS) for molecular characterization of live Drosophila melanogaster with a conventional 14.1 tesla spectrometer equipped with an HRMAS probe.
JoVE Neuroscience
Intravital Microscopy of the Mouse Brain Microcirculation using a Closed Cranial Window
1Bioengineering, University of California, San Diego, 2La Jolla Bioengineering Institute
Intravital microscopy to follow temporal and spatial hemodynamic and inflammatory events in the pial microcirculation.
JoVE General
Visualization of MG53-mediated Cell Membrane Repair Using in vivo and in vitro Systems
Department of Physiology and Biophysics, Robert Wood Johnson Medical School
Described here are protocols used to visualize the dynamic process of MG53-mediated cell membrane repair in whole animals and at the cellular level. These methods can be applied to investigate the cell biology of plasma membrane resealing and regenerative medicine.
JoVE Clinical and Translational Medicine
Hyperinsulinemic-Euglycemic Clamp in the Conscious Rat
1Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Calgary, 2Faculty of Kinesiology, University of Calgary
The hyperinsulinemic-euglycemic clamp is the "gold standard" for the assessment of insulin action. Insulin is infused at a constant rate stimulating glucose uptake. The amount of exogenous glucose infused to counter this drop is indicative of insulin sensitivity. Here the procedure is performed on a conscious, unrestrained rat.
JoVE Clinical and Translational Medicine
Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus
Department of Pharmacology and Toxicology, University of Utah
Techniques for measurement of electrical activity of the heart by electrocardiogram (ECG), and analysis of cardiac risk factors and susceptibility to arrhythmias following status epilepticus (SE) in the rat are described.
JoVE General
Determining the Contribution of the Energy Systems During Exercise
1Laboratory of Applied Nutrition, School of Physical Education and Sport, University of Sao Paulo, 2Aerobic Performance Research Group, School of Physical Education and Sport, University of Sao Paulo, 3Laboratory of Neuromuscular Adaptations to Strength Training, School of Physical Education and Sport, University of Sao Paulo, 4Martial Arts and Combat Sports Research Group, School of Physical Education and Sport, University of Sao Paulo
This protocol allows researchers focused on exercise and sports sciences to determine the relative contribution of three different energy systems to the total energy expenditure during a large variety of exercises.
JoVE Bioengineering
Plasma Lithography Surface Patterning for Creation of Cell Networks
1Aerospace and Mechanical Engineering, University of Arizona, 2Biomedical Engineering IDP and BIO5 Institute, University of Arizona
A versatile plasma lithography technique has been developed to generate stable surface patterns for guiding cellular attachment. This technique can be applied to create cell networks including those that mimic natural tissues and has been used for studying several, distinct cell types.
JoVE Neuroscience
A Functional Motor Unit in the Culture Dish: Co-culture of Spinal Cord Explants and Muscle Cells
Biozentrum, University of Basel
Cultured muscle cells are an inadequate model to recapitulate innervated muscle in vivo. A functional motor unit can be reproduced in vitro by innervation of differentiated human primary muscle cells using rat embryo spinal cord explants. This article describes how co-cultures of spinal cord explants and muscle cells are established.
JoVE Clinical and Translational Medicine
Real-time Digital Imaging of Leukocyte-endothelial Interaction in Ischemia-reperfusion Injury (IRI) of the Rat Cremaster Muscle
Department of Plastic and Hand Surgery, University of Freiburg Medical Centre
Digital intravital epifluorescence microscopy of postcapillary venules in the cremasteric microcirculation is a convenient method to gain insights into leukocyte-endothelial interaction in vivo in ischemia-reperfusion injury (IRI) of striated muscle tissue. We here provide a detailed protocol to safely perform the technique and discuss its applications and limitations.
JoVE General
Isolation & Characterization of Hoechstlow CD45negative Mouse Lung Mesenchymal Stem Cells
1Charles C. Gates Regenerative Medicine and Stem Cell Biology Program, University of Colorado Denver, 2Department of Medicine, University of Colorado Denver, 3Cancer Center, University of Colorado Denver, 4Webb Waring Institute, University of Colorado Denver
In this article we demonstrate the isolation of murine resident lung mesenchymal stem cells (lung MSC), their expansion, characterization and analysis of immunomodulatory properties.
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.
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