Description:The LINCS Pilot Phase I was composed of 10 centers: two data production/analysis centers, that generated data for the LINCS matrix, four centers dedicated to developing technology to complement and facilitate the collection of cellular signatures, and four centers that developed computational tools for analyzing the data produced by the data production centers. In addition, two external supplements, as well as a number of internal collaborations, supported and augmented the work done by the LINCS centers.