Genes with common functions often exhibit correlated expression levels. which can be used to identify sets of interacting genes from microarray data. Microarrays typically measure expression across genomic space. creating a massive matrix of co-expression that must be mined to extract only the most relevant gene interactions. https://www.roneverhart.com/Western-Digital-Ultrastar-DC-HC570-WUH722222ALE6L4-0F48155-22TB-7-2K-RPM-SATA-6Gb-s-512e-SE-3-5in-Refurbished-HDD/