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Comparison of pin- and acoustic dispense-generated microarrays. The spots contained AMC in a 10% glycerol/buffer solution and were spaced 500 μm apart. (A) Array created with a Stealth SMP4 pin with reloading after 20 spots. Although the diameters varied greatly in size, the spots were very evenly spaced. (B) Acoustic dispensing produced spots that had more uniform spot diameters, but their final positions did not align as well.
