PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY
Forensic DNA analysis. Forensic scientist placing DNA samples from a crime scene into a thermocycler. This is a machine that performs a polymerase chain reaction (PCR) on DNA. PCR is a process that replicates DNA, meaning tiny traces of DNA can be multiplied to an amount suitable for forensic analysis. DNA from a crime scene can be used to determine whether or not a specific person was present.
Model release not available. Property release not required.