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- W2015492742 abstract "A recently developed laser scanning cytometry technique was applied to cytometric studies to detect rapidly stable chromosomal aberrations induced by a carcinogen in a Chinese hamster fibroblast cell line, CHO-WBLT.Individual chromosomes were collected from metaphase cells by a syringe technique and spread on slides. The DNA content of each chromosome stained with propidium iodide was measured with a laser scanning cytometer (LSC). A characteristic DNA histogram, designated as the laser scanning karyotype (LSK), was obtained from about 20,000 chromosomes of CHO-WBLT cells. Each chromosome was confirmed morphologically under the microscope by using a re-location system built into the LSC.A total of 21 chromosomes, including marker chromosomes specific to the cell line, were assigned to 10 major peaks in the LSK, which was analogous to the karyotype demonstrated with the classical Q-banding technique. In contrast, clonal sublines isolated after exposure to the carcinogen benzo[a]pyrene showed LSKs different from those found in untreated control cells, and seven of 20 clones were found to be abnormal, with a small number of chromosomal translocations and/or deletions, which were confirmed by Q-banding.The laser scanning cytometry technique was employed to detect stable chromosomal aberrations in CHO-WBLT cells after treatment with benzo[a]pyrene. The results obtained with this technique were comparable to those obtained by Q-banding; therefore, this method may be useful for rapid primary screening to detect stable, abnormal karyotypes induced by environmental chemicals and/or radiation." @default.
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- W2015492742 date "1999-04-01" @default.
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- W2015492742 title "Application of laser scanning cytometry to the analysis of chromosomal aberrations induced by benzo[a]pyrene in CHO-WBLT cells" @default.
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- W2015492742 doi "https://doi.org/10.1002/(sici)1097-0320(19990401)35:4<363::aid-cyto9>3.0.co;2-g" @default.
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