34.7 MB (2.3 MB compressed)
3096 x 3919 pixels
26.2 x 33.3 cm ⏐ 10.3 x 13.1 in (300dpi)
DR GOPAL MURTI / SCIENCE PHOTO LIBRARY DR GOPAL MURTI / SCIENCE PHOTO LIBRARY
White blood cell. Transmission electron micrograph (TEM) of a white blood cell (leucocyte) from mouse bone marrow. Cell organelles can be seen here. At centre is a dumbbell-shaped nucleus (dark). Light- er chromatin within the nucleus contains the DNA chromosomal material. The cell cytoplasm is grey. Around the perimeter of the cytoplasm are lighter coloured membrane channels: endoplasmic reticulum (ER). Dotted along this ER are ribosomes. Dark lysosomes of many shapes are found in the cyto- plasm: they store enzymes. White blood cells with this type of multilobed nucleus and granules (lysosomes) in their cytoplasm are called granulo- cytes. Magnification: x22,750 at 8x10 inch size.
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