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Related Concept Videos

Lineage Commitment01:21

Lineage Commitment

Commitment is the  process whereby stem cells:
T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
T Cell Types and Functions01:24

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
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...
B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
Determination01:51

Determination

During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In contrast, determination...

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Related Experiment Video

Updated: Jun 7, 2026

Mouse Naïve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets
07:12

Mouse Naïve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets

Published on: April 16, 2015

T-cell lineage determination.

Qi Yang1, J Jeremiah Bell, Avinash Bhandoola

  • 1Department of Pathology and Laboratory Medicine, University of Pennsylvania, School of Medicine, Philadelphia, PA, USA.

Immunological Reviews
|October 26, 2010
PubMed
Summary
This summary is machine-generated.

Hematopoietic stem cells (HSCs) migrate to the thymus to develop into T cells. Early thymic progenitors lose multi-lineage potential, undergoing T-cell lineage commitment.

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Derivation of T Cells In Vitro from Mouse Embryonic Stem Cells

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Related Experiment Videos

Last Updated: Jun 7, 2026

Mouse Naïve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets
07:12

Mouse Naïve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets

Published on: April 16, 2015

Characterization of Thymic Settling Progenitors in the Mouse Embryo Using In Vivo and In Vitro Assays
08:56

Characterization of Thymic Settling Progenitors in the Mouse Embryo Using In Vivo and In Vitro Assays

Published on: June 9, 2015

Derivation of T Cells In Vitro from Mouse Embryonic Stem Cells
08:27

Derivation of T Cells In Vitro from Mouse Embryonic Stem Cells

Published on: October 14, 2014

Area of Science:

  • Immunology
  • Developmental Biology
  • Hematopoiesis

Background:

  • T cells originate from hematopoietic stem cells (HSCs) in the bone marrow.
  • HSCs generate progenitors that migrate to the thymus for T cell development.
  • Early thymic progenitors are multipotent before committing to the T cell lineage.

Purpose of the Study:

  • To review early developmental events in T cell lineage fate determination.
  • To explore the properties of thymus-settling progenitors.
  • To understand T cell lineage specification and commitment processes.

Main Methods:

  • Literature review of T cell development.
  • Analysis of progenitor cell properties and migration.
  • Examination of lineage restriction during thymic development.

Main Results:

  • Earliest thymic progenitors are not T-lineage restricted.
  • Multipotent progenitors gradually lose lineage potential during development.
  • Specific events govern T cell lineage specification and commitment.

Conclusions:

  • Early thymic progenitor properties are crucial for T cell development.
  • Understanding progenitor homing and specification is key to T cell commitment.
  • This review synthesizes current knowledge on early T cell fate determination.