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120.7 MB (29.8 MB compressed)
5304 x 7952 pixels
45.0 x 67.3 cm ⏐ 17.7 x 26.5 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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