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Clue to Boy's Killer

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Laser enhances image In the Martinez case, forensic specialists applied super-glue (cyanocrylate) fumes to the print and rinsed the surface with rhodamine, a fluorescent dye. Then they exposed the print to the laser; the light was passed through an orange filter to maximize the illumination. "For nonporous-type surfaces, like weapons or plastic bags, it's very effective," said Michael Murphy, supervisor of the latent print section of the California Justice Department's Bureau of Forensic Services in Sacramento. "There's a misconception that the laser develops the prints. It doesn't. It...Read full article

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    Published: September 1997
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