Electronic imaging system for direct and rapid quantitation of fluorescence from electrophoretic gels: Application to ethidium bromide-stained DNA

John C. Sutherland, Bohai Lin, Denise C. Monteleone, JoAnn Mugavero, Betsy M. Sutherland, John Trunk

Research output: Contribution to journalArticle

92 Scopus citations


We have built an electronic imaging system based on a modified charge-coupled-device television camera that directly quantitates the distribution of fluorescence from electrophoretic gels, chromatograms, and other stationary sources. Exposure times can exceed 1 min. Unlike the photographic system that it replaces, the response of the camera is directly proportional to the intensity of incident fluorescence, and image data are digitized and stored in computer memory ready for analysis immediately upon completion of an exposure. We describe procedures for the display, normalization, and archival storage of image data and programs that use images of ethidium bromide-stained DNA in alkaline agarose gels to quantitate single-strand breaks in DNA.

Original languageEnglish (US)
Pages (from-to)446-457
Number of pages12
JournalAnalytical Biochemistry
Issue number2
Publication statusPublished - Jan 1 1987
Externally publishedYes


ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Molecular Biology

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