Islet of Langerhans, TEM
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Islet of Langerhans, TEM
Islet of Langerhans. Transmission electron micrograph (TEM) of a section through cells clustered in an islet of Langerhans in the pancreas. A variety of endocrine cell types is seen representing beta cells secreting insulin, and alpha cells secreting glucagon. These hormones are stored in the many cytoplasmic granules (black spots) and released into blood vessels to regulate the supply of glucose throughout the body. Magnification: x3, 000 when printed 10 centimetres tall
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9241405
© MICROSCAPE/SCIENCE PHOTO LIBRARY
Alpha Cell Beta Cell Black And White Cell Biology Cytological Cytology Digestive System Endocrine System Glucagon Granule Granules Histological Histology Hormonal Hormone Insulin Islet Of Langerhans Organelle Organelles Pancreas Pancreatic Secretion Secretory Transmission Electron Micrograph Transmission Electron Microscope Cells Section Sectioned
EDITORS COMMENTS
This print showcases the intricate beauty of the Islet of Langerhans, a cluster of cells found in the pancreas. Taken using a transmission electron microscope (TEM), this high-resolution image reveals the fascinating structure and composition of these specialized cells. The islet contains various types of endocrine cells, each with its own vital role in maintaining glucose balance within our bodies. The beta cells, responsible for producing insulin, are depicted here alongside alpha cells that secrete glucagon. These hormones play crucial roles in regulating blood sugar levels. One can observe numerous cytoplasmic granules scattered throughout the islet's cellular landscape. These tiny black spots represent storage sites for insulin and glucagon before their release into nearby blood vessels. This process ensures precise control over glucose distribution throughout our body systems. With a magnification level of x3,000 when printed at 10 centimeters tall, this photograph offers an extraordinary glimpse into the microscopic world within our pancreas. It serves as a testament to both the complexity and elegance inherent in biological structures. This stunning image from Science Photo Library not only highlights key aspects of cell biology but also underscores how scientific advancements allow us to explore and appreciate nature's hidden wonders on such minute scales.
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