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

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

 JoVE Biology

Reconstruction of 3-Dimensional Histology Volume and its Application to Study Mouse Mammary Glands

1Department of Medical Biophysics, University of Toronto, 2Platform Biological Sciences, Sunnybrook Research Institute, 3Department of Laboratory Medicine and Pathobiology, University of Toronto, 4Physical Sciences, Sunnybrook Research Institute, 5Department of Pathology and Laboratory Medicine, Medical University of South Carolina, 6Manitoba Institute of Cell Biology, University of Manitoba

JoVE 51325

 JoVE Medicine

Chick Heart Invasion Assay for Testing the Invasiveness of Cancer Cells and the Activity of Potentially Anti-invasive Compounds

1Department of Radiation Oncology and Experimental Cancer Research, University of Ghent, 2Department of Sustainable Organic Chemistry and Technology, University of Ghent, 3Department of Chemistry, University of Delhi

JoVE 52792

 JoVE Medicine

Ex Vivo Treatment Response of Primary Tumors and/or Associated Metastases for Preclinical and Clinical Development of Therapeutics

1Department of Pathology, Memorial Sloan Kettering Cancer Center, 2Molecular Pharmacology and Chemistry Program, Memorial Sloan Kettering Cancer Center, 3Department of Radiology, Weill Cornell Medical College, 4Department of Medicine, Memorial Sloan Kettering Cancer Center, 5Department of Oncology, Memorial Sloan Kettering Cancer Center, 6Department of Surgery, Memorial Sloan Kettering Cancer Center

JoVE 52157

 JoVE Medicine

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

 JoVE 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

 JoVE Neuroscience

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

 Science Education: General Laboratory Techniques

Histological Sample Preparation for Light Microscopy

JoVE Science Education

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.

 JoVE Cancer Research

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

 JoVE Medicine

Working with Human Tissues for Translational Cancer Research

1Department of Surgical Oncology, University of Texas MD Anderson Cancer Center, 2Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, 3Department of Pathology and Institutional Tissue Bank, University of Texas MD Anderson Cancer Center

JoVE 53189

 JoVE Immunology and Infection

Human Placental and Decidual Organ Cultures to Study Infections at the Maternal-fetal Interface

1Benioff Children’s Hospital, 2Department of Pathology, University of California, San Francisco, 3Center for Reproductive Sciences and Department of Obstetrics, University of California, San Francisco, 4Program in Microbial Pathogenesis and Host Defense, University of California, San Francisco, 5Biomedical Sciences Program, University of California, San Francisco

JoVE 54237

 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 Bioengineering

Lignin Down-regulation of Zea mays via dsRNAi and Klason Lignin Analysis

1The School of Plant Sciences, University of Arizona, 2Department of Chemical Engineering and Materials Science, DOE Great Lakes Bioenergy Research Center, Michigan State University, 3The Institute for Sustainable and Renewable Resources, The Institute for Advanced Learning and Research, 4Department of Plant, Soil and Microbial Sciences, Michigan State University

JoVE 51340

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