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50.9 MB (2.7 MB compressed)
4300 x 4136 pixels
36.3 x 35.1 cm ⏐ 14.3 x 13.8 in (300dpi)
STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Intestinal endocrine cell, coloured transmission electron micrograph (TEM). This is a type 1 intestinal endocrine cell. The granules (green) contain serotonin, a chemical responsible for smooth muscle contraction. The cell nucleus (purple) is at lower centre. Magnification: x10,.
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