HUBERT RAGUET / EURELIOS / SCIENCE PHOTO LIBRARY HUBERT RAGUET / EURELIOS / SCIENCE PHOTO LIBRARY
Forensics. Gloved hands of a forensic scientist remove dried blood from a hammer using a scalpel. Blood is taken for genetic fingerprinting or to determine its blood group. The blood group is found by reconstituting the dried blood with saline solution and then mixing it with different antibodies to see which of them cause the blood to clot. Genetic, or DNA (deoxyribonucleic acid), fingerprinting may enable the person the blood came from to be identified. These facts can aid a criminal investigation. Rubber gloves help to maintain a sterile environment.
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