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Related Concept Videos

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,...
Immunological Memory01:23

Immunological Memory

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?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature is...
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...
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,...
Active versus Passive Immunity01:31

Active versus Passive Immunity

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...
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...

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Studying Inherited Immunity in a Caenorhabditis elegans Model of Microsporidia Infection
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Ancestry Matters in Decoding Immunity.

Kesong Wu1, Amanda J Oliver2, Zewen Kelvin Tuong1

  • 1Ian Frazer Centre for Children's Immunotherapy Research, Child Health Research Centre, Faculty of Health, Medicine and Behavioural Sciences, The University of Queensland, South Brisbane, Queensland, Australia.

Immunology and Cell Biology
|June 30, 2026
PubMed
Summary
This summary is machine-generated.

The Chinese Immune Multi-Omics Atlas (CIMA) created a large-scale immune cell map from Chinese adults, addressing ancestry bias in genomics. This atlas aids in understanding immune cell regulation and noncoding variant impacts.

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Area of Science:

  • Immunology
  • Genomics
  • Bioinformatics

Background:

  • Existing single-cell genomics resources exhibit significant European ancestry bias.
  • A comprehensive immune cell atlas is crucial for understanding human immune diversity and regulation.
  • Addressing ancestry bias is vital for equitable and accurate genomic research.

Purpose of the Study:

  • To establish a population-scale immune multi-omics atlas for Chinese adults.
  • To mitigate ancestry bias in single-cell genomics data.
  • To enable cell-type-resolved regulatory mapping and assess noncoding variant effects.

Main Methods:

  • Profiling over 10 million peripheral blood mononuclear cells from 428 Chinese adults.
  • Utilizing paired single-cell RNA sequencing (scRNA-seq) and single-cell Assay for Transposase-Accessible Chromatin sequencing (scATAC-seq).
  • Developing CIMA-Comprehensive Long-read Mapping (CIMA-CLM) to integrate chromatin features with transcriptomic context.

Main Results:

  • Creation of the Chinese Immune Multi-Omics Atlas (CIMA), a large-scale resource.
  • Mitigation of European ancestry bias in immune cell genomics.
  • Enabled cell type-resolved regulatory mapping across diverse immune populations.
  • Demonstrated CIMA-CLM's capability in predicting chromatin accessibility and noncoding variant effects, particularly in FOXP3+ regulatory T cells.

Conclusions:

  • CIMA provides a valuable, ancestry-diverse resource for immune system research.
  • The atlas facilitates deeper understanding of immune cell regulation and function.
  • CIMA-CLM advances the analysis of noncoding genetic variation in immune cells.