PROF. P. MOTTA / DEPT. OF ANATOMY / UNIVERSITY "LA SAPIENZA", ROME / SCIENCE PHOTO LIBRARY PROF. P. MOTTA / DEPT. OF ANATOMY / UNIVERSITY "LA SAPIENZA", ROME / SCIENCE PHOTO LIBRARY
Lens of the eye. False-colour scanning electron micrograph (SEM) of fibre-like cells that form the lens of the eye. The transparency of the lens (width 4 millimetres) is due to the absence of nuclei in its cells, and to the crystalline precision of their arrangement. The zip-like rows of ball-and-socket joints that bind these cells together may also play a part. In cross-section lens cells are flattened hexagons, arranged in regular stacks. The cells of the lens are called fibres because of their dimensions, with lengths of 10 millimetres and diameters of 5 micrometres. Magnification: x460 at 6x7cm size. Magnification: x700 at 4x5 inches size.
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