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Related Concept Videos

Renewal of Intestinal Stem Cells01:23

Renewal of Intestinal Stem Cells

The intestinal epithelial lining rapidly renews every 4 to 5 days. The renewal is facilitated by intestinal stem cells (ISCs) located at the base of the crypt– a gland located at the bottom of each villus. ISCs divide asymmetrically to form new stem cells and progenitor daughter cells. The daughter cells are called transit-amplifying (TA) cells which move upwards along the crypt and either differentiate into absorptive cells– the enterocytes or secretory cells– including the goblet,...
Intralumenal Vesicles and Multivesicular Bodies01:38

Intralumenal Vesicles and Multivesicular Bodies

Intraluminal vesicles (ILVs) are small vesicles 50-80 nm in diameter formed during the maturation of early endosomes. A specialized endosome containing numerous ILVs is called a multivesicular body (MVB). ILVs contain internalized molecules such as antigens, nucleic acids, proteins, and metabolites. Some of these molecules are released from the MVBs inside exosomes and are transported to other cells. Other MVBs contain molecules that are retained in the ILVs and are later degraded within the...
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Lymphatic Vessels and Lymph Transport

Lymphatic vessels, known as lymphatics, are crucial in transporting lymph from peripheral tissues to our venous system. This process begins with lymph entering through tiny capillaries that branch through tissues. These capillaries have unique features such as larger diameters, thinner walls, and a distinctive one-way valve system formed by overlapping endothelial cells.
This one-way system allows fluids, solutes, and even pathogens to enter but prevents their return to the intercellular spaces.
Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
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Absorption of Nutrients

Absorption refers to taking dietary nutrients from the intestinal lumen for transportation throughout the body. After digestion in the small intestine, carbohydrates, proteins, and fats are broken down into simpler forms. These essential macronutrients and other vital substances, such as vitamins, minerals, and water, are then prepared for absorption into the bloodstream.
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Related Experiment Video

Updated: May 11, 2026

Evaluation of a Novel Laser-assisted Coronary Anastomotic Connector - the Trinity Clip - in a Porcine Off-pump Bypass Model
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Evaluation of a Novel Laser-assisted Coronary Anastomotic Connector - the Trinity Clip - in a Porcine Off-pump Bypass Model

Published on: November 24, 2014

Re-entry into the true lumen from the subintimal space.

Peter A Schneider1, Michael T Caps, Nicolas Nelken

  • 1Division of Vascular Therapy, Hawaii Permanente Medical Group and Kaiser Foundation Hospital, Honolulu, Hawaii 96819, USA. peter.schneider@kp.org

Journal of Vascular Surgery
|May 7, 2013
PubMed
Summary

Endovascular reconstruction using subintimal recanalization is replacing traditional bypass for chronic total occlusions. Mastering re-entry into the true lumen is key for successful superficial femoral and popliteal artery procedures.

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Last Updated: May 11, 2026

Evaluation of a Novel Laser-assisted Coronary Anastomotic Connector - the Trinity Clip - in a Porcine Off-pump Bypass Model
12:00

Evaluation of a Novel Laser-assisted Coronary Anastomotic Connector - the Trinity Clip - in a Porcine Off-pump Bypass Model

Published on: November 24, 2014

Intravital Imaging of Intraepithelial Lymphocytes in Murine Small Intestine
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Intravital Imaging of Intraepithelial Lymphocytes in Murine Small Intestine

Published on: June 24, 2019

Area of Science:

  • Vascular Surgery
  • Interventional Cardiology
  • Endovascular Techniques

Background:

  • Endovascular reconstruction is increasingly favored over femoral-popliteal bypass surgery.
  • Subintimal recanalization enables treatment of long chronic total occlusions.

Purpose of the Study:

  • To review techniques for achieving true lumen re-entry.
  • To address the challenges of re-entry in endovascular procedures.

Main Methods:

  • Focus on re-entry techniques for superficial femoral artery.
  • Focus on re-entry techniques for popliteal arteries (above and below knee).

Main Results:

  • Detailed summary of various re-entry strategies.
  • Highlights critical steps for successful lumen re-entry.

Conclusions:

  • Effective re-entry techniques are crucial for endovascular success.
  • Advances in endovascular methods are transforming femoropopliteal disease treatment.