The first microarray scanner, built in 1989 by Stephen Fodor and colleagues at Affymax, was a table-sized, home-built affair that included a Zeiss confocal microscope, a laser, and several mirrors.

Microarray giant Affymetrix has updated two of its more popular expression sets. With the release of the GeneChip ® Mouse Expression Set 430 and Rat Expression Set 230, the company now provides "the ...

For Affymetrix-manufactured microarrays, the method entails labeling DNA with biotin, then adding streptavidin conjugated to phycoerythrin after hybridization (represented by yellow circles).