German: Autoradiographie
Japanese: オートラジオグラフィ

Physics. A technique detecting radioactive spots in a sample. The specimen containing radioactive atoms is overlaid with an X-ray film, revealing the localisation of radioactivity as a pattern of black stains. The technique can be used to visualise radioactively labelled molecules (e.g. DNA fragments) after separating by gel electrophoresis.

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