Thyroid parafollicular cell, coloured transmission electron micrograph (TEM). This section has revealed the cell's nucleus (light brown). Also called

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Thyroid parafollicular cell, coloured transmission electron micrograph (TEM). This section has revealed the cell's nucleus (light brown). Also called a C-cell, this thyroid cell produces and secretes calcitonin, a hormone that controls blood calcium levels. The parafollicular cells are found in connective tissue (green) adjacent to the thyroid follicles. They are large and have a cytoplasm (red) containing numerous secretory granules (purple). Magnification: x5000 when printed at 10 centimetres wide.

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Size: 4900px × 3675px
Photo credit: © STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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