Computer graphics of haemoglobin blood substitute

Computer graphics of haemoglobin blood substitute

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This image is part of the feature Artificial Blood

Credit: DAVID PARKER/SCIENCE PHOTO LIBRARY

Caption: Computer graphics representation of haemoglobin, the oxygen-carrying molecule of blood, constructed during research for a blood substitute at the U.K. Medical Research Council (MRC) Laboratory of Molecular Biology, Cambridge. Haemoglobin's four protein chains are shown in blue & purple, with the four haem groups, the oxygen-binding sites, in red. MRC scientists used recombinant DNA techniques on the bacterium Escherichia coli, to synthesize human haemoglobin. The need to develop a blood substitute has arisen because of concern over contamination of stocks by pathogens such as HIV, the virus causing AIDS.

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Keywords: anatomy, bacteria, blood subs'te, blood substitute, cells, dna, haemoglobin, haemoglobin blood substitute, human blood, human body, recombinant, recombinant dna, red blood cell, synthetic haemoglobn

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