FIG. 1.

Quantitative results of genomic comparison using a serotype Typhimurium LT2 microarray to strain R16, a DT2 pigeon isolate from the German city of Neumünster (1994). Three areas of deleted genes in strain R16 relative to strain LT2 are marked I, II, and III. The y axis denotes the medians of the DT2/LT2 signal ratio plotted on a logarithmic scale. The grey line represents the cutoff value for presence or absence of a gene; peaks that reach below this line represent genes that are absent from the test strain.