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Th2 Cells: Subset of helper-inducer T-lymphocytes which synthesize and secrete the interleukins Il-4, Il-5, Il-6, and Il-10. These cytokines influence B-cell development and antibody production as well as augmenting humoral responses.

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

An Advanced Murine Model for Nonalcoholic Steatohepatitis in Association with Type 2 Diabetes

1Department of Endocrinology & Metabolism Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, 2Berlin Institute of Health (BIH), 3Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, 4DZHK (German Centre for Cardiovascular Research), 5Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, 6Julius Wolff Institute (JWI) and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin

JoVE 59470

 Immunology and Infection

Isolation of Leukocytes from the Murine Tissues at the Maternal-Fetal Interface

1Department of Obstetrics & Gynecology, Wayne State University School of Medicine, 2School of Paediatrics and Reproductive Health, Research Centre for Reproductive Health, the Robinson Research Institute, The University of Adelaide, 3Department of Immunology & Microbiology, Wayne State University School of Medicine, 4Perinatology Research Branch, NICHD/NIH/DHHS

JoVE 52866

 Immunology and Infection
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