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  • Title: Technical and statistical improvements for flow cytometric DNA analysis of paraffin-embedded tissue.
    Author: Sickle-Santanello BJ, Farrar WB, DeCenzo JF, Keyhani-Rofagha S, Klein J, Pearl D, Laufman H, O'Toole RV.
    Journal: Cytometry; 1988 Nov; 9(6):594-9. PubMed ID: 3208624.
    Abstract:
    Flow cytometric DNA analysis of paraffin-embedded solid tumors has permitted review of large series of archival tissue in attempts to relate abnormal DNA content to prognosis. Limitations of the technique include: 1) a laborious, time-consuming procedure; 2) variation in technique between laboratories; and 3) lack of an objective method of computing DNA indices. Critical evaluation of our technique has shortened the time involved in dewaxing and rehydration, selectively utilized patient's own normal tissue as the internal standard, proved reproducibility of stored specimens, standardized DNA index computation, and developed a statistical analysis to confirm aneuploidy. These technical improvements and the development of a statistical analysis provide a way to shorten the procedure time and standardize the data generated from flow cytometric DNA analysis so as to improve the quality of retrospective reviews of paraffin-embedded tumors and accelerate the definition of flow cytometry's role as a prognostic indicator.
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