Figure 4.
Comparison of log ratio of fluorescent hybridization signal between microarray features printed with metal and ceramic printing tips. Microarrays were manufactured (see text) using both steel and ceramic tips and hybridized with genomic DNA spiked with known BACs. The ratio for each element is plotted for two arrays printed with metal tips (A) Ceramic tips, (B), and one of each (C,D). The strong correlation in each of the plots shows that no significant difference exists between the two types of tips.
