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Related Concept Videos

Lymphoid Cells and Tissues01:18

Lymphoid Cells and Tissues

Lymphoid cells and tissues are integral to the immune system, which is crucial in maintaining our body's defense against harmful pathogens. They form the building blocks of lymphoid organs, which include the spleen, thymus, and lymph nodes.
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
Secondary Lymphoid Organs01:15

Secondary Lymphoid Organs

Secondary organs, including lymph nodes, the spleen, and mucosa-associated lymphoid tissue (MALT), work harmoniously to protect us from disease and infection.
The spleen is a vital organ in the lymphatic system, nestled in the upper left side of the abdomen. It is composed of two primary regions: the red pulp and the white pulp, each having distinct functions. The red pulp performs a significant role in blood filtration. It efficiently purges the blood of old or damaged red blood cells and...
The Bronchial Tree01:23

The Bronchial Tree

The human bronchi and bronchial tree play a crucial role in the respiratory system, facilitating the exchange of oxygen and carbon dioxide. Let's delve into the intricate structure and functions of these respiratory components.
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Primary Lymphoid Organs01:16

Primary Lymphoid Organs

Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
The red bone marrow is a soft, spongy tissue nestled in the interior of long bones such as the humerus and femur. It is the site...
Anatomy of Respiratory System II: Lower Respiratory Tract01:31

Anatomy of Respiratory System II: Lower Respiratory Tract

The lower respiratory tract is anatomically composed of several vital structures, including the larynx, trachea, bronchial tree, alveoli, lungs, and pleurae. Each component has a specific function, and all are intricately connected to ensure efficient respiration.
The Larynx
It is located between the pharynx and the trachea, acts as a passageway for air, and hosts several critical structures, such as the epiglottis, vocal cords, and glottis. The epiglottis acts as a gateway, guiding food to the...
Functions of the Lymphatic and Immune System01:28

Functions of the Lymphatic and Immune System

The lymphatic system plays a crucial role in bolstering our immune system. It consists of a network of lymphoid organs, lymph, and lymphatic vessels that provide structural and functional support in safeguarding the body against pathogens such as viruses and bacteria.
The primary lymphoid organs, including the bone marrow and the thymus, serve as the maturation sites for lymphocytes. Secondary lymphoid organs, like the mucosa-associated lymphoid tissue, activate these lymphocytes and serve as...

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Related Experiment Video

Updated: Jun 7, 2026

Examining the Role of Nasopharyngeal-associated Lymphoreticular Tissue (NALT) in Mouse Responses to Vaccines
12:21

Examining the Role of Nasopharyngeal-associated Lymphoreticular Tissue (NALT) in Mouse Responses to Vaccines

Published on: August 1, 2012

Bronchus-associated lymphoid tissue (BALT) structure and function.

Troy D Randall1

  • 1Department of Medicine, Division of Allergy, Immunology and Rheumatology, University of Rochester Medical Center, Rochester, New York, USA.

Advances in Immunology
|November 2, 2010
PubMed
Summary
This summary is machine-generated.

Bronchus-associated lymphoid tissue (BALT) and inducible BALT (iBALT) are key lung immune tissues. They help manage infections, tumors, and allergies by acquiring antigens and initiating immune responses in the airways.

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Last Updated: Jun 7, 2026

Examining the Role of Nasopharyngeal-associated Lymphoreticular Tissue (NALT) in Mouse Responses to Vaccines
12:21

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Published on: August 1, 2012

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Bronchoalveolar Lavage of Murine Lungs to Analyze Inflammatory Cell Infiltration
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Area of Science:

  • Immunology
  • Pulmonary Medicine
  • Respiratory System Research

Background:

  • Bronchus-associated lymphoid tissue (BALT) is a natural immune structure in some mammals' airways.
  • Inducible BALT (iBALT) forms in response to inflammation or infection in mice and humans.
  • Both tissues are crucial for lung immunity and memory cell maintenance.

Purpose of the Study:

  • To review the development and function of BALT and iBALT.
  • To explore their roles in pulmonary immunity against various challenges.
  • To discuss their involvement in lung diseases and autoimmunity.

Main Methods:

  • Literature review and synthesis of existing research on BALT and iBALT.
  • Analysis of studies on immune responses in the respiratory tract.
  • Comparative discussion of BALT and iBALT across different species.

Main Results:

  • BALT is constitutive in some species, while iBALT is inducible in mice and humans.
  • Both BALT and iBALT are vital for acquiring airway antigens and initiating local immune responses.
  • These tissues play significant roles in managing infectious agents, tumors, and allergens in the lungs.

Conclusions:

  • BALT and iBALT are critical components of the lung's immune surveillance system.
  • Understanding their function is essential for addressing pulmonary diseases, including infections, autoimmunity, and inflammatory conditions.
  • Further research into BALT and iBALT can inform therapeutic strategies for respiratory illnesses.