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120.7 MB (31.2 MB compressed)
7952 x 5304 pixels
67.3 x 45.0 cm ⏐ 26.5 x 17.7 in (300dpi)
KARL GAFF / SCIENCE PHOTO LIBRARY KARL GAFF / SCIENCE PHOTO LIBRARY
Potassium ferricyanide, polarised light micrograph. Potassium ferricyanide is a bright red-orange soluble salt. It is used in histology where it transformed into the blue pigment Prussian blue in the presence of iron. Magnification: x70 when printed 10 centimetres wide.
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