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36.6 MB (860.0 KB compressed)
4000 x 3200 pixels
33.8 x 27.2 cm ⏐ 13.3 x 10.7 in (300dpi)
EYE OF SCIENCE / SCIENCE PHOTO LIBRARY EYE OF SCIENCE / SCIENCE PHOTO LIBRARY
Sponge spicules. Coloured scanning electron micrograph (SEM) of Â spicules from the sponge Tethya minuta. Sponges are primitive aquatic organisms that filter food from the water. They are a loose aggregation of cells supported by spicules and needles composed of silica. Magnification: x330 when printed at 10 centimetres wide.
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