FIG. 3.

Bimodal hybridization experiment at equimolar concentrations of two different labeled target DNAs (A2-4 [▴, CR1A2-4]), A2-27 [•, CR1A2-27]). (A) Relative fluorescence ratios are shown for the regular and reverse-label microarray (diagonal line represents the one-to-one ratio expected; open symbols denote probes cross-hybridizing with the above labeled target DNAs). (B) Distance tree of the nirS 70-mers spotted on BC002 showing the distribution of positive features and their correspondence (open symbols) with the labeled targets.