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Related Concept Videos

Production of Formed Elements01:34

Production of Formed Elements

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...
Multipotency of Hematopoietic Stem Cells01:19

Multipotency of Hematopoietic Stem Cells

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...
Hematopoiesis01:21

Hematopoiesis

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...
Differentiation of Common Myeloid Progenitor Cells01:15

Differentiation of Common Myeloid Progenitor Cells

Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
Overview of the Vascular System01:20

Overview of the Vascular System

The vascular system comprises an extensive network of arteries, capillaries, and veins. The vascular system can be broadly divided into the blood and lymphatic systems. Typically, blood vessels can be categorized into three histological regions: tunica intima, tunica media, and tunica adventitia. The tunica intima consists of a single layer of endothelial cells attached to the basal lamina. Underlying the basal lamina is a connective tissue layer and an elastic lamina that gives stability and...
Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...

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Related Experiment Video

Updated: May 10, 2026

Isolation of Endothelial Progenitor Cells from Healthy Volunteers and Their Migratory Potential Influenced by Serum Samples After Cardiac Surgery
08:43

Isolation of Endothelial Progenitor Cells from Healthy Volunteers and Their Migratory Potential Influenced by Serum Samples After Cardiac Surgery

Published on: February 14, 2017

Circulating and tissue resident endothelial progenitor cells.

David P Basile1, Mervin C Yoder

  • 1Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana.

Journal of Cellular Physiology
|June 25, 2013
PubMed
Summary
This summary is machine-generated.

Identifying endothelial progenitor cells (EPCs) remains controversial due to the lack of a unique marker. This review clarifies EPC identification, derivation, and nomenclature for vascular repair research.

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Isolation of Endothelial Progenitor Cells from Human Umbilical Cord Blood
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Isolation of Endothelial Progenitor Cells from Human Umbilical Cord Blood

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Phenotypic and Functional Characterization of Endothelial Colony Forming Cells Derived from Human Umbilical Cord Blood
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Phenotypic and Functional Characterization of Endothelial Colony Forming Cells Derived from Human Umbilical Cord Blood

Published on: April 13, 2012

Related Experiment Videos

Last Updated: May 10, 2026

Isolation of Endothelial Progenitor Cells from Healthy Volunteers and Their Migratory Potential Influenced by Serum Samples After Cardiac Surgery
08:43

Isolation of Endothelial Progenitor Cells from Healthy Volunteers and Their Migratory Potential Influenced by Serum Samples After Cardiac Surgery

Published on: February 14, 2017

Isolation of Endothelial Progenitor Cells from Human Umbilical Cord Blood
07:26

Isolation of Endothelial Progenitor Cells from Human Umbilical Cord Blood

Published on: September 14, 2017

Phenotypic and Functional Characterization of Endothelial Colony Forming Cells Derived from Human Umbilical Cord Blood
13:46

Phenotypic and Functional Characterization of Endothelial Colony Forming Cells Derived from Human Umbilical Cord Blood

Published on: April 13, 2012

Area of Science:

  • Cardiovascular Biology
  • Stem Cell Research
  • Regenerative Medicine

Background:

  • Endothelial progenitor cells (EPCs) are crucial for vascular repair.
  • Over a decade of research has not yielded a unique marker for EPC identification.
  • Existing markers and criteria for EPCs remain debated.

Purpose of the Study:

  • To review the fundamental criteria for identifying endothelial progenitor cells (EPCs).
  • To provide an overview of methods for EPC derivation, expansion, and enumeration.
  • To propose nomenclature changes for clarity in vascular repair research.

Main Methods:

  • Literature review of studies on endothelial progenitor cells.
  • Analysis of methods for cell derivation, expansion, and enumeration.
  • Discussion of circulating and resident vascular cells.

Main Results:

  • No single unique marker definitively identifies endothelial progenitor cells.
  • Various methods exist for studying EPCs, with ongoing debate on their efficacy.
  • Circulating and resident vascular cells play roles in vascular repair.

Conclusions:

  • Clarifying EPC identification is essential for advancing vascular repair understanding.
  • Standardized nomenclature is needed to demystify the cellular elements involved in vascular repair.
  • Further research is required to establish definitive EPC markers and criteria.