Table 2.
DNA feature sizes and probe densities for the various array fabrication methods
| Surface | Area | Probe density/cm2 |
|---|---|---|
| Gold | 100 μm diameter spot | 5×1012 |
| Amine-modified surface | 4.5mm diameter spot | 2.5×1012 |
| Photolithography | 5–10 μm | 106 |
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