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Paraffin Embedding: The infiltrating of tissue specimens with paraffin, as a supporting substance, to prepare for sectioning with a microtome.

Acute and Chronic Models of Hyperglycemia in Zebrafish: A Method to Assess the Impact of Hyperglycemia on Neurogenesis and the Biodistribution of Radiolabeled Molecules

1UMR 1188 Diabète athérothombose Thérapie Réunion Océan Indien (DéTROI), Saint-Denis de La Réunion, France, Université de La Réunion, INSERM, 2RIPA (Radiochimie et Imagerie du Petit Animal), Cyclotron de la Réunion Océan Indien CYROI, 3CHU de La Réunion

JoVE 55203


 Developmental Biology

Utilizing 3D Printing Technology to Merge MRI with Histology: A Protocol for Brain Sectioning

1Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke, 2Cerebral Microcirculation Section, National Institute of Neurological Disorders and Stroke, 3Viral Immunology Section, National Institute of Neurological Disorders and Stroke

JoVE 54780


 Neuroscience

Analyzing Beneficial Effects of Nutritional Supplements on Intestinal Epithelial Barrier Functions During Experimental Colitis

1Department of Molecular Biomedicine, Center for Research and Advanced Studies of the National Polytechnic Institute, 2Department of Physiology, Biophysics and Neurosciences, Center for Research and Advanced Studies of the National Polytechnic Institute, 3Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies of the National Polytechnic Institute

JoVE 55095


 Medicine

Comparable Decellularization of Fetal and Adult Cardiac Tissue Explants As 3D-like Platforms for in Vitro Studies

1i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 2INEB - Instituto de Engenharia Biomédica, Universidade do Porto, 3Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, 4Gladstone Institutes, University of California San Francisco, 5Faculty of Medicine, University of Porto

Video Coming Soon

JoVE 56924


 JoVE In-Press

Immunohistochemical Analysis in the Rat Central Nervous System and Peripheral Lymph Node Tissue Sections

1Department of Clinical Neuroscience, Neuroimmunology Unit, Center for Molecular Medicine, Karolinska Institutet, 2Department of Neuroimmunology, Center for Brain Research, Medical University of Vienna, 3Department of Medical Biochemistry and Biophysics, Vascular Biology Unit, Karolinska Institutet

JoVE 50425


 Neuroscience

Techniques for Processing Eyes Implanted With a Retinal Prosthesis for Localized Histopathological Analysis

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

JoVE 50411


 Medicine

Assessment of the Cytotoxic and Immunomodulatory Effects of Substances in Human Precision-Cut Lung Slices

1Fraunhofer Institute for Toxicology and Experimental Medicine, Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), 2Institute for Pathology, Hannover Medical School, Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), 3Division of Thoracic and Vascular Surgery, Klinikum Region Hannover (KRH), 4Department of Cardiothoracic, Transplantation and Vascular Surgery (HTTG), Hannover Medical School, Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), 5Institute of Pharmacology and Toxicology, RWTH Aachen University, 6Institute for Immunology, Hannover Medical School, Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH)

Video Coming Soon

JoVE 57042


 JoVE In-Press

Recombinant Collagen I Peptide Microcarriers for Cell Expansion and Their Potential Use As Cell Delivery System in a Bioreactor Model

1Department Tissue Engineering and Regenerative Medicine, University Hospital Wuerzburg, 2Translational Center Regenerative Therapies (TLC-RT), Fraunhofer Institute for Silicate Research ISC, 3Fujifilm Manufacturing Europe B.V.

JoVE 57363


 Bioengineering

In Vivo and Ex Vivo Approaches to Study Ovarian Cancer Metastatic Colonization of Milky Spot Structures in Peritoneal Adipose

1Section of Urology, Department of Surgery, The University of Chicago, 2Department of Pathology, Robert Wood Johnson Medical School, 3Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, 4Department of Laboratory Medicine and Pathobiology, Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University of Toronto, University Health Network, 5Departments of Medicine, Pharmacology, and Cancer Biology, Duke University Medical Center

JoVE 52721


 Medicine

Transposon Mediated Integration of Plasmid DNA into the Subventricular Zone of Neonatal Mice to Generate Novel Models of Glioblastoma

1Department of Neurosurgery, University of Michigan School of Medicine, 2Department of Pediatrics, Division of Hematology-Oncology, University of Michigan School of Medicine, 3Department of Cell and Developmental Biology, University of Michigan

JoVE 52443


 Medicine

Primer for Immunohistochemistry on Cryosectioned Rat Brain Tissue: Example Staining for Microglia and Neurons

1Department of Child Health, University of Arizona College of Medicine - Phoenix, 2BARROW Neurological Institute, Phoenix Children's Hospital, 3Department of Biology and Biochemistry, University of Bath, 4Neuroscience Program, Arizona State University, 5Phoenix VA Healthcare System

JoVE 52293


 Neuroscience

Histological Sample Preparation for Light Microscopy

JoVE 5039

Histology is the study of cells and tissues, which is typically aided by the use of a light microscope. The preparation of histological samples can vary greatly based on the inherent properties of the samples such as size and hardness as well as expected post-processing which includes planned staining techniques or other down-stream applications. As described in this video, specimen preparation typically begins with a fixation procedure to prevent degradation of the sample by naturally occurring enzymes that are released by the cells upon death. Once fixed, samples are placed into an embedding medium that is able to sufficiently support the sample. Most commonly this is paraffin wax, but other materials such as a glycerin based freezing medium and agars are also used to surround the sample during sectioning. Sectioning then takes place on a microtome or other cutting device that allows the user to shave the sample into thin slices ranging from a few microns to a few millimeters in thickness. Once cut, sections are mounted on a glass slide and stained to bring out specific features of the sample before being imaged on a microscope.


 General Laboratory Techniques

Intra-iliac Artery Injection for Efficient and Selective Modeling of Microscopic Bone Metastasis

1Lester and Sue Smith Breast Center, Baylor College of Medicine, 2Department of Molecular and Cellular Biology, Baylor College of Medicine, 3Graduate Program in Developmental Biology, Baylor College of Medicine, 4Department of Molecular and Human Genetics, Baylor College of Medicine, 5McNair Medical Institute, Baylor College of Medicine, 6Dan L. Duncan Cancer Center, Baylor College of Medicine

JoVE 53982


 Cancer Research

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