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Preservation, Biological:
 JoVE Medicine

Heterotopic Renal Autotransplantation in a Porcine Model: A Step-by-Step Protocol

1Multi Organ Transplant Program, Department of Surgery, Toronto General Hospital, 2Division of Nephrology, The Hospital for Sick Children, 3Programa de Doctorat en Medicina, La Universitat Autónoma de Barcelona, 4Laboratory Medicine and Pathobiology, Toronto General Hospital, 5Department of Medicine, Toronto General Hospital, 6Departments of Surgery (Urology) & Physiology, Developmental & Stem Cell Biology, The Hospital for Sick Children


JoVE 53765

 JoVE Biology

Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside

1Biogeochemical Sciences Branch, Cold Regions Research and Engineering Laboratory, US Army Engineer Research & Development Center, Hanover, NH, 2Environmental Processes Branch, Environmental Laboratory, US Army Engineer Research & Development Center, Vicksburg, MS, 3Terrestrial and Cryospheric Scienes Branch, Cold Regions Research and Engineering Laboratory, US Army Engineer Research & Development Center, Hanover, NH, 4Biogeochemical Sciences Branch, Cold Regions Research and Engineering Laboratory, US Army Engineer Research & Development Center, Fairbanks, AK


JoVE 54091

 JoVE Biology

Purification of Transcripts and Metabolites from Drosophila Heads

1Department of Neurology, McKnight Brain Institute, University of Florida, 2Department of Entomology and Nematology, University of Florida, 3Genetics Institute, Department of Molecular Genetics and Microbiology, University of Florida, 4McKnight Brain Institute, Department of Neuroscience, Genetics Institute, Center for Translational Research on Neurodegenerative Diseases, and Center for Movement Disorders and Neurorestoration, University of Florida


JoVE 50245

 JoVE Biology

Isolation of Blood-vessel-derived Multipotent Precursors from Human Skeletal Muscle

1Stem Cell Research Center, Department of Bioengineering and Orthopedic Surgery, University of Pittsburgh, 2Department of Orthopedic Surgery, University of Pittsburgh, 3Nazarbayev University Research and Innovation System, Nazarbayev University, 4Department of Orthopaedic Surgery, UCLA Orthopaedic Hospital and the Orthopaedic Hospital Research Center, University of California at Los Angeles, 5Department of Cell Biology, Erasmus MC Stem Cell Institute, 6OHSU Center for Regenerative Medicine, Oregon Health & Science University, 7Centre for Cardiovascular Science and MRC Centre for Regenerative Medicine, Queen's Medical Research Institute and University of Edinburgh, 8David Geffen School of Medicine and the Orthopaedic Hospital Research Center, University of California at Los Angeles, 9Stem Cell Research Center, Department of Orthopedic Surgery and McGowan Institute for Regenerative Medicine, University of Pittsburgh


JoVE 51195

 JoVE Neuroscience

Detection of the Genome and Transcripts of a Persistent DNA Virus in Neuronal Tissues by Fluorescent In situ Hybridization Combined with Immunostaining

1Virus and Centromere Team, Centre de Génétique et Physiologie Moléculaire et Cellulaire, CNRS UMR 5534, 2Université de Lyon 1, 3Laboratoire d'excellence, LabEX DEVweCAN, 4Institut de Virologie Moléculaire et Structurale, CNRS UPR 3296, 5Centre de Recherche en Cancérologie de Lyon, INSERM U1052, CNRS UMR 5286


JoVE 51091

 JoVE Biology

Preparation of Formalin-fixed Paraffin-embedded Tissue Cores for both RNA and DNA Extraction

1Department of Pathology & Molecular Medicine, Queen's University, 2Division of Cancer Biology & Genetics, Queen's Cancer Research Institute, Queen's University, 3Department of Surgery, Division of Urology, McGill University, 4Transformative Pathology Program, Ontario Institute for Cancer Research (OICR)


JoVE 54299

 JoVE Medicine

Contrast Enhanced Ultrasound Imaging for Assessment of Spinal Cord Blood Flow in Experimental Spinal Cord Injury

1Laboratoire d'étude de la microcirculation, Faculté de Médecine Paris Diderot Paris VII, U942, 2Department of orthopaedic surgery, Bicetre Universitary Hospital, Public Assistance of Paris Hospital, 3Institute of Medical Science, Faculty of Medicine, University of Toronto, 4Department of Intensive care and Anesthesiology, Bicetre Universitary Hospital, Public Assistance of Paris Hospital


JoVE 52536

 JoVE Medicine

Techniques for Processing Eyes Implanted with a Retinal Prosthesis for Localized Histopathological Analysis: Part 2 Epiretinal Implants with Retinal Tacks

1Bionics Institute, 2Department of Pathology, The University of Melbourne, 3Cochlear Limited, 4Department of Anatomical Pathology, St Vincent's Hospital Melbourne, 5Medical Bionics Department, The University of Melbourne


JoVE 52348

 JoVE Medicine

Rapid Fractionation and Isolation of Whole Blood Components in Samples Obtained from a Community-based Setting

1Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 2Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, 3Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, 4Department of Psychology, University of Illinois at Urbana-Champaign, 5Department of Epidemiology, Mailman School of Public Health, Columbia University, 6Department of Epidemiology, University of Michigan School of Public Health, 7Center for Molecular Medicine and Genetics, Wayne State University School of Medicine


JoVE 52227

 JoVE Medicine

Quantitative Analysis of Chromatin Proteomes in Disease

1Department of Anesthesiology, David Geffen School of Medicine at UCLA, 2Department of Medicine, David Geffen School of Medicine at UCLA, 3Department of Physiology, David Geffen School of Medicine at UCLA, 4Department of Internal Medicine, Nora Eccles Harrison Cardiovascular Research and Training Institute, University of Utah


JoVE 4294

 JoVE Immunology and Infection

Optimized Protocols for Mycobacterium leprae Strain Management: Frozen Stock Preservation and Maintenance in Athymic Nude Mice

1Department of Pathology, Instituto Lauro de Souza Lima (ILSL), 2Laboratory Animal House, Instituto Lauro de Souza Lima (ILSL), 3Department of Microbiology, Instituto Lauro de Souza Lima (ILSL), 4Department of Pharmacology, Instituto Lauro de Souza Lima (ILSL)


JoVE 50620

 JoVE Bioengineering

Preparation and Photoacoustic Analysis of Cellular Vehicles Containing Gold Nanorods

1Institute of Applied Physics, Italian National Research Council, 2Department of Experimental and Clinical Biomedical Sciences, University of Florence, Firenze, 3Department of Physics and Astronomy, University of Florence, Sesto Fiorentino, 4Department of Pharmacy and Biotechnology, University of Bologna


JoVE 53328

 JoVE Bioengineering

Non-contact, Label-free Monitoring of Cells and Extracellular Matrix using Raman Spectroscopy

1Department of Thoracic and Cardiovascular Surgery and Inter-University Centre for Medical Technology Stuttgart-Tübingen (IZST), Eberhard Karls University, Tübingen, 2Department of Cell and Tissue Engineering, Fraunhofer Institute of Interfacial Engineering and Biotechnology (IGB) Stuttgart, Germany, 3Department for Medical Interfacial Engineering (IGVT), University of Stuttgart, Germany, 4Institute of Tissue Engineering and Regenerative Medicine, Julius-Maximillians University, Würzburg, Germany


JoVE 3977

 Science Education: General Laboratory Techniques

Regulating Temperature in the Lab: Preserving Samples Using Cold

JoVE Science Education

Preservation of laboratory samples, specimens, and reagents using extreme cold is routinely performed in biomedical research labs. This video will discuss some of the methods for keeping laboratory samples cold and will explain the correct cooling method to use for each experimental requirement.

For example, cooling agents, such as ice and dry ice, are typically used when keeping samples cold during experiments. This video discusses the physical properties of the most commonly used cooling agents, as well as safety precautions for working with them. When it comes to keeping samples cold in between experiments, cooling equipment, including laboratory grade refrigerators and freezers can be used to preserve samples for extended period of time. Also discussed in this video are types of samples and reagents that can be stored in the commonly-available laboratory cooling equipment. Finally, the concept of cryopreservation is introduced as a process through which tissues, cells, and biomolecules are cooled to sub-zero temperatures, thereby effectively stopping all sample-degrading biological activity. Several methods of cryopreservation are discussed that minimize or eliminate the formation of damaging ice crystals.

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