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Graft Rejection: An immune response with both cellular and humoral components, directed against an allogeneic transplant, whose tissue antigens are not compatible with those of the recipient.

Cell-mediated Immune Responses

JoVE 10896

The cell-mediated immune system is the host’s primary response against invasive bacteria and viruses that cause intracellular infections. It is also essential for fighting against and destroying cancer cells. Furthermore, the cell-mediated immune system plays a role in the rejection of organ transplants or graft tissue.

Phagocytic cells of the innate immune system, such as macrophages or dendritic cells, are the first to recognize a foreign particle. These cells engulf the foreign particle and digest it. Small molecules of the foreign particle, called antigens, remain intact and are presented at the surface of the phagocytic cell. The presentation is facilitated by proteins of the major histocompatibility complex (MHC), which binds the antigen and protrude from the cell. The phagocytic cell is therefore also called an antigen presenting cell (APC). The MHC-antigen complex activates cells of the adaptive immune system, which eventually fight the source of the foreign particle. T cells are a type of lymphocyte that are named after their location of maturation—the thymus. In the thymus, precursor T cells differentiate into two main types, CD4+ and CD8+ T cells. These cell types are named after the surface receptor that determines the cell’s function. All T cells carry T-cell receptors, but the coreceptor CD4

 Core: Immune System

Modified Heterotopic Hindlimb Osteomyocutaneous Flap Model in the Rat for Translational Vascularized Composite Allotransplantation Research

1Christine M. Kleinert Institute for Hand and Microsurgery, 2Cardiovascular Innovation Institute, University of Louisville, 3Kentucky Spinal Cord Injury Research Center, University of Louisville, 4Department of Physiology, University of Louisville

JoVE 59458

 Medicine

Full-field Optical Coherence Microscopy for Histology-like Analysis of Stromal Features in Corneal Grafts

1Quinze Vingts National Ophthalmology Hospital, 2Vision Institute/CIC 503, UPMC-Sorbonne Universities, UMR_S 968 / INSERM, U968 / CHNO des XV-XX / CNRS, UMR_7210, 3Laboratory of Ophthalmic Instrument Development, The Wilmer Eye Institute, Johns Hopkins University School of Medicine

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JoVE 57104

 JoVE In-Press

Dextran Enhances the Lentiviral Transduction Efficiency of Murine and Human Primary NK Cells

1Laboratory of Molecular Immunology and Immunotherapy, Blood Research Institute, The Blood Center of Wisconsin, 2Vector Core Lab, Blood Research Institute, The Blood Center of Wisconsin, 3Laboratory of Lymphocyte Biology, Blood Research Institute, The Blood Center of Wisconsin, 4Laboratory of Stem Cell Transcriptional Regulation, Blood Research Institute, The Blood Center of Wisconsin, 5Department of Microbiology and Immunology, The Medical College of Wisconsin, 6Department of Pediatrics, The Medical College of Wisconsin, 7Department of Medicine, The Medical College of Wisconsin

JoVE 55063

 Immunology and Infection

Detection of Residual Donor Erythroid Progenitor Cells after Hematopoietic Stem Cell Transplantation for Patients with Hemoglobinopathies

1Department of Pediatrics, Medical University Innsbruck, 2Department of Internal Medicine V (Hematology & Oncology), Medical University Innsbruck, 3Tyrolean Cancer Research Institute, 4Department of Pediatrics, Medical University Graz

JoVE 56002

 Developmental Biology

Murine Full-thickness Skin Transplantation

1Sidney-Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, 2Department of Liver and Transplantation Surgery, Chang-Gung Transplantation Institute, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, 3Vascularized Composite Allotransplantation Laboratory, Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine

JoVE 55105

 Immunology and Infection

Assessment of Viability of Human Fat Injection into Nude Mice with Micro-Computed Tomography

1Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Plastic and Reconstructive Surgery Division, Stanford University School of Medicine, 2Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine

JoVE 52217

 Medicine
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