45.1 MB (5.2 MB compressed)
4681 x 3364 pixels
39.6 x 28.4 cm ⏐ 15.6 x 11.2 in (300dpi)
CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
False colour transmission electron micrograph of a human lymphocyte (white blood cell), showing details of the cell's ultrastructure. The nucleus appears blue & red at top left; the red areas towards the inside of the nuclear envelope represent heterochromatin - nuclear genetic material. Numerous mitochondria (pink) are dissipated throughout the cytoplasm (green); these are responsible for chemical energy synthesis within the cell. The dark red circular feature is a centriole, which is involved in the formation of the mitotic apparatus (spindle) at the time of cell division. Magnification: X 6000 at 35mm size.
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