The HuProt v2.0 19K human proteome microarray from Arrayit, Sunnyvale, Calif, and CDI, Mayaguez, Puerto Rico, consists of 19,275 human proteins representing most of the human proteome in a cost-effective glass microarray format. Containing all major protein families—including transcription factors, kinases, and secreted proteins—the microarray enables human proteomics applications, including global analysis of the human immune response, small molecule-protein interactions, enzyme-substrate interactions, antibody binding specificity, protein-protein interactions, and the binding of DNA and RNA to the human proteome. Coldroom manufacturing ensures the stability of the protein content, while the universal 1 x 25 x 76 mm slide format is compatible with more than 10,000 scanners worldwide. Fluorescence detection enables both single and multi-color labeling. For more information, visit Arrayit.