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Related Experiment Video

Updated: May 6, 2026

Generation of Human Alloantigen-specific T Cells from Peripheral Blood
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Adaptive immunity.

Francisco A Bonilla1, Hans C Oettgen

  • 1Division of Immunology, Children's Hospital Boston, Boston, MA 02115, USA. Francisco.bonilla@childrens.harvard.edu

The Journal of Allergy and Clinical Immunology
|January 12, 2010
PubMed
Summary

The adaptive immune system uses diverse antigen receptors and generates long-lived memory cells for robust pathogen defense. This system ensures rapid and effective responses upon re-exposure to pathogens, maintaining immune homeostasis.

Area of Science:

  • Immunology
  • Molecular Biology

Background:

  • The innate immune system offers rapid pathogen detection and elimination.
  • Adaptive immunity provides a refined recognition of self- and non-self antigens.
  • Adaptive immunity involves antigen-presenting cells and lymphocytes for pathogen-specific responses.

Purpose of the Study:

  • To elucidate the mechanisms of adaptive immunity.
  • To highlight the generation of diverse antigen receptors and immunologic memory.
  • To explain the role of lymphocytes and lymphoid organs in immune responses.

Main Methods:

  • Analysis of lymphocyte development and activation pathways.
  • Examination of gene segment rearrangement in T and B lymphocytes.
  • Investigation of memory T and B cell generation and function.

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Main Results:

  • Adaptive immunity generates a vast repertoire of antigen receptor specificities through gene rearrangement.
  • The process establishes long-lived memory T and B cells.
  • Memory cells enable faster and stronger responses upon subsequent pathogen encounters.

Conclusions:

  • Adaptive immunity is crucial for tailored and remembered responses to pathogens.
  • Lymphocyte receptor diversity and memory cell formation are key features of adaptive immunity.
  • This system is vital for host defense and immune homeostasis.