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Related Concept Videos

Neural Circuits01:25

Neural Circuits

Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
Diversity of Antigen Receptors01:28

Diversity of Antigen Receptors

Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
Special Features of Adaptive Immunity01:20

Special Features of Adaptive Immunity

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.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

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...
Introduction to Innate and Adaptive Immunity01:21

Introduction to Innate and Adaptive Immunity

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.
Innate immunity is the body's natural, nonspecific defense system that acts quickly to protect against pathogens. It incorporates physical barriers like skin and mucous membranes and cellular elements such as phagocytes and natural killer cells. This part of our immune system provides an immediate,...

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Related Experiment Video

Updated: May 15, 2026

Imaging the Human Immunological Synapse
09:37

Imaging the Human Immunological Synapse

Published on: December 26, 2019

Evolving immune circuits are generated by flexible, motile, and sequential immunological synapses.

Audrey Gérard1, Peter Beemiller, Rachel S Friedman

  • 1Department of Pathology, University of California, San Francisco, CA 94143-0511, USA.

Immunological Reviews
|January 3, 2013
PubMed
Summary

The immune system

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Last Updated: May 15, 2026

Imaging the Human Immunological Synapse
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Published on: December 26, 2019

An Endothelial Planar Cell Model for Imaging Immunological Synapse Dynamics
09:25

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Qualitative and Quantitative Analysis of the Immune Synapse in the Human System Using Imaging Flow Cytometry
08:35

Qualitative and Quantitative Analysis of the Immune Synapse in the Human System Using Imaging Flow Cytometry

Published on: January 7, 2019

Area of Science:

  • Immunology
  • Cell Biology
  • Systems Biology

Background:

  • The immune system comprises diverse, motile cells that communicate spatially and temporally.
  • Immune system properties like tolerance and allergy emerge from complex cell interactions.
  • Cell motility and communication are crucial for orchestrating immune responses.

Purpose of the Study:

  • To explore the flexibility of the primary immunological synapse (IS) concerning cell motility.
  • To define immunological circuits as sequences of cell-cell synaptic interactions.
  • To investigate how circuit assembly dynamics influence emergent immune responses.

Main Methods:

  • Conceptual analysis of immunological synapse flexibility.
  • Modeling of sequential immunological circuits.
  • Systems-level analysis of immune response determinants.

Main Results:

  • The primary immunological synapse (IS) exhibits flexibility in cell motility.
  • Immunological circuits, comprising multiple cell-cell interactions, are proposed as functional units.
  • Timing, stoichiometry, milieu, and duration of circuit assembly are key to immune outcomes.

Conclusions:

  • Understanding immunological circuits provides a framework for systems analysis of immune responses.
  • The study emphasizes the importance of cell-cell interactions beyond T-cell-antigen-presenting cell engagement.
  • Dynamic assembly of immunological circuits dictates the overall immune system behavior.