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Analyses of chromosomal positions of copies of Abr1. Chromosomes of strains H39 and H97 were separated by CHEF (B) and blotted onto a nylon membrane and hybridized to Abr1 (C). Chromosomes that hybridized weakly are indicated by an arrow. In panel A, homologous chromosomes of H39 and H97 are indicated with the molecular size markers on the left (megabases).
