alexa Detection of bromodeoxyuridine incorporation in mammalian chromosomes by a bromodeoxyuridine antibody. II. Demonstration of sister chromatid exchanges.


Journal of Clinical Toxicology

Author(s): Speit G, Vogel W

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Abstract A commercially available bromodeoxyuridine (BrdUrd) antibody was used to demonstrate sister chromatid differentiation (SCD) and to evaluate sister chromatid exchanges (SCEs) in V79 Chinese hamster cells. V79 cells were cultivated for one cell cycle in the presence of BrdUrd, followed by a second cell cycle in the absence of BrdUrd. Chromosome preparations were stained by a common immunologic staining technique. The staining pattern observed is similar to that after FPG (fluorescent plus Giemsa) staining, though with reverse staining specificity. The sensitivity of BrdUrd detection is enhanced by a factor of 20 compared to the FPG technique and thus allows the evaluation of SCEs at very low BrdUrd concentrations. The application of the antibody technique gives information about the origin and localization of SCEs and produces further evidence for the spontaneous occurrence of SCEs.
This article was published in Chromosoma and referenced in Journal of Clinical Toxicology

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