has part realizes has specified input achieves_planned_objective characteristic of role of has role function chromatin evaluant role chromatin immunoprecipitation epigenetic modification identification objective ChIP-chip assay DNA methylation profiling by ChIP-chip assay Chris Stoeckert DNA methylation ChIP-chip Penn group Jie Zheng An epigenetic modification assay that identifies sites of DNA methylation using ChIP-chip technologies. DNA methylation profiling by ChIP-chip assay epigenetic modification assay detection technique DNA microarray metadata complete