STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Pancreas. Light micrograph of a section through the human pancreas. The central pink islets of langerhans are hormone-secreting and form the endocrine (secreting directly into the blood) part of the pancreas. The surrounding exocrine (secreting into the gut via ducts) tissue (produces digestive enzymes. Magnification: x200 when printed at 10 centimetres wide.
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