JOSE CALVO / SCIENCE PHOTO LIBRARY JOSE CALVO / SCIENCE PHOTO LIBRARY
Coloured transmission electron micrograph (TEM) showing three anterior pituitary endocrine cells. From left to right they are, a thyrotroph (blue), which produces thyroid stimulating hormone (TSH), a gonadotroph (yellow), which produces follicle-stimulating and luteinizing hormones (FSH/LH), and a somatotroph (pink), which produces growth hormone (GH).
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