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50.0 MB (2.5 MB compressed)
4862 x 3594 pixels
41.1 x 30.5 cm ⏐ 16.2 x 12.0 in (300dpi)
STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Sponge spicules. Coloured scanning electron micrograph (SEM) of spicules from a sponge. 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: x 500 when printed at 10 centimetres wide.
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