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Related Concept Videos

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.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
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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.
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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Immunodeficiency Diseases01:25

Immunodeficiency Diseases

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Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency...
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Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

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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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Active versus Passive Immunity01:31

Active versus Passive Immunity

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Immunity, along with the ability to limit pathogen growth to prevent significant body tissue damage, can be gained either by (1) actively developing an immune response within the individual after exposure to a pathogen or after getting vaccinated or (2) passively transferring immune components from an immune individual to one who is nonimmune. Both these forms of immunity can be found naturally and in medical practices.
Active Immunity
Active immunity refers to the resistance one develops...
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Special Features of Adaptive Immunity01:20

Special Features of Adaptive Immunity

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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.
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,...
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Related Experiment Video

Updated: Dec 22, 2025

Isolation of Leukocytes from the Murine Tissues at the Maternal-Fetal Interface
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Prenatal development of human immunity.

Jong-Eun Park1, Laura Jardine2, Berthold Gottgens3,4

  • 1Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK.

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|May 9, 2020
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Summary

The human immune system develops in parallel with blood systems during prenatal life. Advanced single-cell technologies now allow detailed mapping of this complex, adaptable system.

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Area of Science:

  • Developmental biology
  • Immunology
  • Genomics

Background:

  • The blood and immune systems develop concurrently during early prenatal development.
  • Previous studies relied on animal models, limiting human-specific insights.
  • Understanding human immune system development is crucial for health and disease.

Purpose of the Study:

  • To map the developing human immune system using advanced single-cell technologies.
  • To understand the composition and emergent properties of the human immune system during development.
  • To investigate the system's adaptability to developmental needs and environmental factors.

Main Methods:

  • Utilizing single-cell multi-omics approaches.
  • Leveraging large-scale single-cell genomics and advanced imaging technologies.
  • Integrating data from the Human Cell Atlas initiative.

Main Results:

  • Enabled systems-level mapping of the developing human immune system.
  • Revealed parallel development of blood and immune systems.
  • Demonstrated the malleable and responsive nature of the developing immune system.

Conclusions:

  • Single-cell technologies provide unprecedented insights into human immune system development.
  • The developing immune system is adaptable to internal and external cues.
  • Further research is needed to elucidate the specific roles of immune cells during development.