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Related Concept Videos

Development of Immunocompetence01:22

Development of Immunocompetence

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...
Humoral Immune Responses01:36

Humoral Immune Responses

Overview
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...
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...
Immunoprecipitation01:20

Immunoprecipitation

Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...

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Comparative in vivo Study of gp96 Adjuvanticity in the Frog Xenopus laevis
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Published on: September 16, 2010

Comparative immunology.

Edwin L Cooper1

  • 1Laboratory of Comparative Neuroimmunology, Department of Neurobiology, David Geffen School of Medicine at UCLA, University of California, Los Angeles, California, USA.

Integrative Zoology
|March 15, 2011
PubMed
Summary
This summary is machine-generated.

Comparative immunology explores animal defense strategies, from invertebrates to humans. It highlights innate immunity in invertebrates and adaptive immunity in vertebrates, with potential biomedical applications.

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Characterization of Thymus-dependent and Thymus-independent Immunoglobulin Isotype Responses in Mice Using Enzyme-linked Immunosorbent Assay
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Evaluation of Host-Pathogen Responses and Vaccine Efficacy in Mice
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Last Updated: Jun 3, 2026

Comparative in vivo Study of gp96 Adjuvanticity in the Frog Xenopus laevis
11:20

Comparative in vivo Study of gp96 Adjuvanticity in the Frog Xenopus laevis

Published on: September 16, 2010

Characterization of Thymus-dependent and Thymus-independent Immunoglobulin Isotype Responses in Mice Using Enzyme-linked Immunosorbent Assay
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Characterization of Thymus-dependent and Thymus-independent Immunoglobulin Isotype Responses in Mice Using Enzyme-linked Immunosorbent Assay

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Evaluation of Host-Pathogen Responses and Vaccine Efficacy in Mice
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Evaluation of Host-Pathogen Responses and Vaccine Efficacy in Mice

Published on: February 22, 2019

Area of Science:

  • Comparative immunology bridges zoology and immunology.
  • Studies the evolution of immune defense strategies across all animal phyla.

Background:

  • All animals possess immune systems to defend against foreign invaders and cancer.
  • Invertebrate innate immunity is ancient, rapid, and essential for vertebrate adaptive immunity.
  • Vertebrate immunity evolved with thymus-controlled T cells and bone marrow-derived B cells.

Purpose of the Study:

  • To examine the immune spectrum across diverse animal groups.
  • To present specific findings on immune responses in model organisms like earthworms.
  • To explore biomedical applications of animal-derived molecules and the survival role of invertebrate/ectotherm immunity.

Main Methods:

  • Comparative analysis of immune system evolution.
  • Examination of innate and adaptive immune responses.
  • Investigation of cellular components like phagocytic and natural killer cells.

Main Results:

  • Invertebrates exhibit non-adaptive, innate immune responses.
  • Vertebrates possess adaptive, acquired, clonal, and anticipatory immune responses.
  • Evolutionary steps include recognition, phagocytic cells, and natural killer cells.

Conclusions:

  • Comparative immunology offers insights into evolutionary biology and zoology.
  • Understanding invertebrate and ectotherm immune systems has potential biomedical and survival applications.
  • The study emphasizes the spectrum of immune strategies from invertebrates to vertebrates.