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Levels of histone acetylation before, during, and after repair of a double-strand break by homologous recombination at the homologous donor sequence. DNA from the ChIP analysis in Fig. 2 was reexamined using primers adjacent to the HO consensus sequence in the HMLα gene to measure histone acetylation levels. Significant changes are noted by asterisks and small light grey circles as described in the legend to Fig. 2.
