
FISH analysis of probes representing six bacterial clones. Chromosome spreads were hybridized with Cy3-labeled plasmid DNA from clones b28a18 (A), p1065b2 (B), p20p19 (C), b367j20 (D), b19e12 (E) and pc23i1 (F). Chromosomes 6 and 5 were discriminated in parallel dual-color hybridization experiments using Cy3-labeled large-insert plasmid DNA and FluorX-labeled chromosome-6 or chromosome-1, 5 and 19-specific alphoid-DNA probes (data not shown). The hybridization signal inA, B, and C is on chromosome 6.











