33.3 MB (3.0 MB compressed)
4217 x 2761 pixels
35.8 x 23.4 cm ⏐ 14.1 x 9.2 in (300dpi)
M. I. WALKER / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY M. I. WALKER / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY
Light micrograph of islets of Langerhans. This clump of secretory cells forms part of the endocrine system of the body, which releases hormones into the blood. It is composed of numerous beta cells, which secrete insulin, and the less numerous alpha cells, which secrete glucagon. Magnification 150x.
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