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50.3 MB (50.0 MB compressed)
3727 x 4720 pixels
31.5 x 39.9 cm ⏐ 12.4 x 15.7 in (300dpi)
MICROSCAPE / SCIENCE PHOTO LIBRARY MICROSCAPE / SCIENCE PHOTO LIBRARY
Islet of Langerhans beta cell. Transmission electron micrograph (TEM) of a section through a beta cell in an islet of Langerhans in the pancreas. Beta cells secrete the hormone insulin, which is stored in many cytoplasmic granules (black spots) and released into blood vessels to regulate the supply of glucose throughout the body. Magnification: x12,000 when printed 10 centimetres tall.
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