Chromatid break rejoining and exchange aberration formation following gamma-ray exposure: analysis in G2 human fibroblasts by chemically induced premature chromosome condensation

Abstract excerpt

PURPOSE: To analyse the kinetics of chromatid break induction, rejoining, and misrejoining after y-irradiation in G2 phase human cells using premature chromosome condensation induced by calyculin A. MATERIALS AND METHODS: Human fibroblast AG1522 cells were irradiated with gamma-rays and chromosomes were then prematurely condensed by calyculin A. The number of chromatid breaks and chromatid exchanges in G2...

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