52.3 MB (6.4 MB compressed)
5099 x 3588 pixels
43.2 x 30.5 cm ⏐ 17.0 x 12.0 in (300dpi)
PETER MENZEL / SCIENCE PHOTO LIBRARY PETER MENZEL / SCIENCE PHOTO LIBRARY
DNA fingerprinting. A laboratory technician entering details from a DNA autoradiograph (autorad) into a computer. Autorads are produced by labelling the DNA fragments in an electrophoresis gel with a radioactive marker chemical. The gel is then placed on an piece of X- ray film, the radiation from the marker leaves a dark patch, representing each fragment, on the film after development. Comparison of autorads from two samples of DNA is the method by which a correlation may be made - so-called DNA fingerprinting. Photographed at Lifecodes Corp., a commercial laboratory in New York State, USA.
Model release not available. Property release not required.