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関連する概念動画

What is the Immune System?01:38

What is the Immune System?

Overview
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
Humoral Immune Responses01:36

Humoral Immune Responses

Overview
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,...
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...

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関連する実験動画

Updated: Jul 9, 2026

Isolation and Th17 Differentiation of Na&iuml;ve CD4 T Lymphocytes
12:59

Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes

Published on: September 26, 2013

浮気と霊長類の免疫システム

C L Nunn1, J L Gittleman, J Antonovics

  • 1Department of Biology, Gilmer Hall, University of Virginia, Charlottesville, VA 22904-4328, USA. charlie.nunn@virginia.edu

Science (New York, N.Y.)
|November 10, 2000
PubMed
まとめ

霊長類の免疫系の進化は,社会的行動と結びついている. 雌の交配相手が多い種で白血球の数が高くなるのは,性感染症が免疫の違いを引き起こすことを示唆している.

科学分野:

  • 進化生物学の進化生物学について
  • 免疫学 免疫学とは
  • 類人猿の生態学 類人猿の生態学

背景:

  • 免疫系の進化に影響を与える行動的,生態学的要因は十分に研究されていない.
  • これらの要因を理解することは,免疫防御における生物多様性を説明するために極めて重要です.

研究 の 目的:

  • 病気の危険因子と霊長類の免疫システム進化の関係を調査する.
  • グループサイズ,人口密度,病原体被曝,交配の乱交を白血球数と関連付ける仮説を検証する.

主な方法:

  • 霊長類種における白血球数に関する系統遺伝分析を行った.
  • 免疫マーカーと生態学的/行動的変数との相関を調べた.

主要な成果:

  • 白血球の数は,雌性交配の乱交性の高い霊長類の種で有意に高かった.
  • グループサイズ,人口密度,および土壌媒介の病原体への曝露は,白血球数と有意な相関を示さなかった.

結論:

  • 性選択と性感染症のリスクは,霊長類の免疫系進化の重要な要因である.
  • これらの発見は,免疫防御の形成における社会的交配システムの役割を強調しています.

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Systemic Bacterial Infection and Immune Defense Phenotypes in Drosophila Melanogaster

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Last Updated: Jul 9, 2026

Isolation and Th17 Differentiation of Na&iuml;ve CD4 T Lymphocytes
12:59

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Published on: September 26, 2013

Cultivation of Heligmosomoides Polygyrus: An Immunomodulatory Nematode Parasite and its Secreted Products
12:40

Cultivation of Heligmosomoides Polygyrus: An Immunomodulatory Nematode Parasite and its Secreted Products

Published on: April 6, 2015

Systemic Bacterial Infection and Immune Defense Phenotypes in Drosophila Melanogaster
10:12

Systemic Bacterial Infection and Immune Defense Phenotypes in Drosophila Melanogaster

Published on: May 13, 2015