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Related Concept Videos

Immunological Memory01:23

Immunological Memory

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Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
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Special Features of Adaptive Immunity01:20

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The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
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Defense Mechanism Against Infection01:26

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Natural flora, body system defenses, and inflammation are natural barriers of the body against infectious agents regardless of previous exposure. Normal floras of the human body refer to the microbial population that colonizes the skin and mucous membranes.
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Introduction to Innate and Adaptive Immunity01:21

Introduction to Innate and Adaptive Immunity

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The human immune system is a complex defense mechanism that protects the body from harmful pathogens and foreign substances. It comprises two crucial components: innate and adaptive immunity.
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Cells of the Adaptive Immune Response01:23

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The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
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Development of Immunocompetence01:22

Development of Immunocompetence

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The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
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Related Experiment Video

Updated: Feb 17, 2026

Induction of Ocular Surface Inflammation and Collection of Involved Tissues
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Induction of Ocular Surface Inflammation and Collection of Involved Tissues

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Natural Immunity and Ocular Inflammation.

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    Fukuoka Igaku Zasshi = Hukuoka Acta Medica
    |December 12, 2017
    PubMed
    Summary
    This summary is machine-generated.

    Innate immunity, particularly elevated IL-6, IL-8, and MCP-1, plays a key role in choroidal neovascularization (CNV) and vitreoretinal diseases. NKT cells and macrophages are critical in CNV formation and subretinal scarring.

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    A Non-invasive Way to Isolate and Phenotype Cells from the Conjunctiva
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    A Non-invasive Way to Isolate and Phenotype Cells from the Conjunctiva
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    Area of Science:

    • Ophthalmology
    • Immunology
    • Molecular Biology

    Background:

    • Inflammation significantly impacts the development and progression of various vitreoretinal diseases.
    • Choroidal neovascularization (CNV) is a hallmark of several serious eye conditions, including age-related macular degeneration and diabetic retinopathy.
    • Understanding the role of innate immunity in these diseases is crucial for developing effective treatments.

    Purpose of the Study:

    • To comprehensively analyze inflammatory immune mediators in vitreous fluids from patients with various vitreoretinal diseases.
    • To investigate the role of Natural Killer T (NKT) cells in the formation of experimental CNV.
    • To establish and analyze an experimental model for subretinal scarring and the role of macrophages in this process.

    Main Methods:

    • Multiplex bead analysis was used to measure 20 soluble factors (cytokines, chemokines, growth factors) in vitreous samples from patients with diabetic macular edema, proliferative diabetic retinopathy, retinal vein occlusions, and retinal detachment.
    • Laser-induced experimental CNV was performed in CD1 knockout and Ja18 knockout mice to assess the role of NKT cells.
    • A subretinal scarring model was created by injecting peritoneal exudate macrophages (PECs) into the subretinal space of mice, with subsequent analysis of tissue composition and the role of MCP-1.

    Main Results:

    • Interleukin-6 (IL-6), Interleukin-8 (IL-8), and Monocyte Chemoattractant Protein-1 (MCP-1) were significantly elevated in all tested vitreoretinal disease groups compared to controls.
    • NKT cell-deficient mice (CD1 KO and Ja18 KO) exhibited a significant reduction in experimental CNV formation.
    • Subretinal injection of PECs led to the formation of fibrotic tissue expressing alpha-smooth muscle actin (α-SMA) and collagen.
    • MCP-1 knockout mice showed reduced glial scarring, indicating the critical role of both exogenous and intrinsic macrophages in myofibrotic changes.

    Conclusions:

    • Elevated levels of IL-6, IL-8, and MCP-1 are common inflammatory markers across various vitreoretinal diseases.
    • NKT cells are essential for the development of choroidal neovascularization.
    • Macrophages play a critical role in both CNV formation and the development of subretinal scarring through myofibrotic changes.