OMIKRON / SCIENCE PHOTO LIBRARY OMIKRON / SCIENCE PHOTO LIBRARY
Colour enhanced transmission electron micrograph of hemocyanin, a respiratory protein and pigment found in molluscs and arthropods. Like haemoglobin in mammals, hemocyanin is an oxygen carrying molecule. Each molecule is barrel-shaped appearing rounded end-on but oblong with transverse striations when seen from the side. Here, the hemocyanin molecules are from a marine whelk Burnupena cincta. They are a copper-containing protein (non-porphyrin) that occurs in solution in mollusc hemolymph blood . Magnification Unknown.
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