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Related Concept Videos

Hematopoiesis01:21

Hematopoiesis

8.4K
The process of blood cell formation is called hematopoiesis. Hematopoiesis starts early during development, on the seventh day of embryogenesis. This phase of hematopoiesis is called the primitive wave, wherein the extraembryonic yolk sac allows the production of erythroid cells and endothelial cells from a common precursor called hemangioblast. The erythroid cells provide oxygen to support the growth of the rapidly dividing embryo. Hemangioblasts later develop into hematopoietic stem cells or...
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Overview of Hematopoiesis01:20

Overview of Hematopoiesis

8.0K
Hematopoiesis, or blood cell production, is a vital biological process that begins early in embryonic development and continues throughout life. This process generates the various types of cells found in blood, including red blood cells, white blood cells, and platelets from hematopoietic stem cells (HSCs).
Developmental Phases of Hematopoiesis
Initially, HSCs are formed in the embryonic yolk sac, a critical site for early blood cell production. These stem cells subsequently migrate to other...
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Regulation of Hematopoietic Stem Cells01:01

Regulation of Hematopoietic Stem Cells

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All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
3.8K
Multipotency of Hematopoietic Stem Cells01:19

Multipotency of Hematopoietic Stem Cells

3.7K
The hematopoietic stem cells or HSCs are multipotent, meaning they can differentiate and give rise to all blood and immune cells. HSCs are maintained in the quiescent stage until an external stimulus initiates their differentiation. The multipotent HSCs exist as two heterogeneous populations, long-term repopulating cells (LTRC) and short-term repopulating cells (STRC). The two HSC populations have different surface markers or receptors and are classified based on quiescence and long-term...
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Production of Formed Elements01:34

Production of Formed Elements

3.5K
Hemangioblasts are multipotent stem cells originating from the mesoderm. They give rise to hematopoietic stem cells (HSCs), which undergo hematopoiesis to produce all the formed elements of blood. This process is regulated by a complex network of hematopoietic growth factors, including transcription factors, growth factors, and cytokines. These factors stimulate the HSCs to divide and differentiate, though some HSCs remain undifferentiated to maintain a self-renewing pool.
Most HSCs commit to...
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Related Experiment Video

Updated: Jan 4, 2026

Ex vivo Mimicry of Normal and Abnormal Human Hematopoiesis
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Immunophenotypic dissection of normal hematopoiesis.

Alberto Orfao1, Sergio Matarraz1, Martín Pérez-Andrés1

  • 1Cancer Research Center (IBMCC, USAL-CSIC), Cytometry Service (NUCLEUS) and Department of Medicine, University of Salamanca, Salamanca, Spain; Institute of Biomedical Research of Salamanca (IBSAL), Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Salamanca, Spain.

Journal of Immunological Methods
|November 3, 2019
PubMed
Summary

Flow cytometry immunophenotyping aids in diagnosing blood cancers and immune deficiencies by detailing normal hematopoietic cell patterns. Advanced techniques enable precise identification and classification of malignant cells.

Keywords:
Bone marrowFlow cytometryHematopoiesisImmunophenotypeLymphoid maturationMyeloid maturationPeripheral blood

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Area of Science:

  • Hematology
  • Immunology
  • Cell Biology

Background:

  • Flow cytometry immunophenotyping is crucial for diagnosing and monitoring clonal hematopoietic diseases, including hematological malignancies and primary immunodeficiencies.
  • Accurate diagnosis relies on a thorough understanding of normal hematopoietic cell phenotypic patterns.
  • Technological advancements have enabled multi-antigen analysis, expanding knowledge of normal hematopoietic cell differentiation.

Purpose of the Study:

  • To review the major phenotypic features of normal hematopoietic cells.
  • To establish a basis for identifying aberrant phenotypes in leukemia and lymphoma cells.
  • To highlight the role of immunophenotyping in sensitive detection and accurate classification of hematological malignancies.

Main Methods:

  • Review of scientific literature and established knowledge on flow cytometry and hematopoiesis.
  • Analysis of phenotypic differentiation profiles of hematopoietic cells from precursors to mature populations.
  • Focus on multi-parameter flow cytometry techniques and antibody staining.

Main Results:

  • Detailed phenotypic profiles of normal hematopoietic cells, from CD34+ precursors to mature circulating and tissue-resident cells, have been elucidated.
  • Understanding normal phenotypes allows for more sensitive identification of leukemia/lymphoma cells, even at low frequencies.
  • Accurate classification of hematological malignancies is improved through aberrant phenotype identification.

Conclusions:

  • Comprehensive knowledge of normal hematopoietic cell immunophenotypes is fundamental for diagnosing and classifying hematological disorders.
  • Advances in flow cytometry have significantly enhanced the ability to identify and classify these diseases.
  • This review provides a foundation for understanding normal cell phenotypes to better detect and manage clonal hematopoietic diseases.