SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Blood testing. A technician takes a drop of blood from the finger of a potential donor. Blood group and Rhesus type are normally tested at the donor centre. Further screening, primarily for Hepatitis B and C, HIV and syphilis, is also recommended but needs to be performed at a specialist laboratory. Photographed in Moscow, Russia.
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