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Related Concept Videos

Structure of Blood Vessels01:15

Structure of Blood Vessels

10.2K
Blood is circulated throughout the human body through a network of blood vessels called the circulatory system. This system includes arteries that transport blood from the heart to various body parts. These arterial pathways divide into smaller vessels until they reach the arterioles, which further split into capillaries. It is within these minuscule capillaries that the exchange of nutrients and waste products takes place. After this exchange, the blood is collected by venules, which fuse to...
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Anatomy of Blood Vessels01:20

Anatomy of Blood Vessels

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The vascular system, an integral part of the circulatory system, comprises various blood vessels that play crucial roles in maintaining the body's homeostasis. These blood vessels form a complex and efficient circulatory network. The three primary categories of blood vessels are the arteries, veins, and capillaries.
Arteries
Arteries circulate oxygenated blood from the heart, except the pulmonary artery, which transports deoxygenated blood to the lungs. Large arteries, such as the aorta,...
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Overview of Blood Vessels01:14

Overview of Blood Vessels

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The human cardiovascular system comprises five primary types of blood vessels: arteries, arterioles, veins, venules, and capillaries, each serving unique functions.
Arteries and Arterioles: Arteries are muscular and elastic vessels that primarily carry oxygenated blood from the heart to body tissues, except for the pulmonary artery, which carries deoxygenated blood. They have thick walls to withstand high pressure and contain a layer of muscle tissue, allowing them to expand or contract as...
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Overview of the Vascular System01:20

Overview of the Vascular System

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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...
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Development of Blood Vessels01:07

Development of Blood Vessels

1.6K
The development of the vascular system in a fetus is a complex and intricate process that begins as early as 15 to 16 days post-conception. This process starts outside the embryo, specifically in the mesoderm of the yolk sac, chorion, and connecting stalk. Approximately two days later, the formation of blood vessels occurs within the embryo itself.
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
1.6K
Anatomy of the Circulatory System02:03

Anatomy of the Circulatory System

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The human circulatory system consists of blood, blood vessels that carry blood away from the heart, around the body, and back to the heart, and the heart itself, which acts as a central pump. The systemic circuit supplies blood to the whole body, the coronary circuit supplies blood to the heart, and the pulmonary circuit supplies blood flow between the heart and lungs.
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Related Experiment Video

Updated: Mar 3, 2026

Generation of Human Blood Vessel Organoids from Pluripotent Stem Cells
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Generation of Human Blood Vessel Organoids from Pluripotent Stem Cells

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It's T Time for Normal Blood Vessels.

Bernard Thienpont1, Diether Lambrechts1

  • 1Center for Cancer Biology, VIB, 3000 Leuven, Belgium; Laboratory of Translational Genetics, Department of Human Genetics, KU Leuven, 3000 Leuven, Belgium.

Developmental Cell
|April 26, 2017
PubMed
Summary

T cell activation in tumors normalizes blood vessels, potentially improving chemotherapy and T lymphocyte infiltration. This finding offers a new strategy for cancer immunotherapy by targeting tumor vasculature.

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Micropatterning and Assembly of 3D Microvessels
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Related Experiment Videos

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Area of Science:

  • Oncology
  • Immunology
  • Vascular Biology

Background:

  • Abnormal tumor vasculature hinders chemotherapy effectiveness.
  • Tumor blood vessels impede T lymphocyte infiltration.
  • Aberrant vasculature is linked to increased cancer metastasis.

Purpose of the Study:

  • To investigate the effect of T cell activation on tumor vasculature.
  • To explore the implications of T cell-mediated vascular normalization for cancer treatment.

Main Methods:

  • The study by Tian and colleagues (2017) involved analyzing T cell activation within tumor microenvironments.
  • Researchers observed the impact of this activation on the structure and function of tumor blood vessels.

Main Results:

  • T cell activation was found to induce normalization of blood vessels within tumors.
  • Normalized vasculature may enhance the efficacy of existing cancer therapies.

Conclusions:

  • T cell-mediated vascular normalization presents a novel therapeutic target in oncology.
  • This discovery opens new avenues for enhancing checkpoint immunotherapy by improving the tumor microenvironment.