SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Testing donor blood. Laboratory worker preparing to test samples of donor blood for viral infections. If found to be clean, the blood will be separated into its component parts and used in blood transfusions in hospitals for the injured and those being operated upon. The tubes are labelled with bar codes to aid identification and tracking of the samples. Photographed in 2005, in Moscow, Russia.
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