Light micrograph of cells of the parathyroid gland. The parathyroid cells have round nuclei (dark purple circles) and lightly eosinophilic (light pink) cytoplasm. A few capillaries containing red blood cells (bright red) are also interspersed in between the parathyroid cells. Haematoxylin and eosin stained tissue section. Magnification: 600x when printed at 10cm.