High endothelial venule, TEM C014 / 1445
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High endothelial venule, TEM C014 / 1445
High endothelial venule. Transmission electron micrograph (TEM) of a section through a high endothelial venule (HEV). Venules are tiny veins that transport deoxygenated blood from the capillary beds to the veins. HEVs are specialised post-capillary venous swellings characterised by plump endothelial cells (purple) as opposed to the usual thinner endothelial cells found in regular venules. They enable lymphocytes (white blood cells) circulating in the blood to directly enter a lymph node. Magnification: x10, 000 when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9227055
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Endothelial Endothelium Histological Histology Interior Lymph Nodes Lymphatic System Nodes Small Swelling Tall Tonsils Transmission Electron Microscope Venous Blood Vessel Cells Circulatory System Section Sectioned Vein
EDITORS COMMENTS
This print showcases a high endothelial venule (HEV) in all its intricate glory. Through the lens of a transmission electron microscope, we are granted an up-close view of this specialized post-capillary venous swelling found within our circulatory system. The image reveals the unique characteristics of HEVs, with plump endothelial cells painted in shades of purple. These distinct cells stand out from their thinner counterparts found in regular venules. It is through these remarkable structures that lymphocytes, or white blood cells, can directly enter a lymph node. With a magnification level of x10,000 when printed at 10 centimeters wide, every detail is brought to life. The interior landscape of this tall and slender cell offers us a glimpse into the fascinating world hidden beneath our skin. As we marvel at this biological wonder captured by Steve Gschmeissner for Science Photo Library, it serves as a reminder of the complexity and beauty that lies within our own bodies. This stunning photograph not only provides insight into human anatomy but also highlights the vital role played by HEVs in facilitating immune responses and maintaining overall health.
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