A strain expressing mesodermally expressed SBP-tagged His2B was used but the entire embryo was used for subsequent ChIP (no FACS-enrichment of mesodermal nuclei).
Chromatin immunoprecipitation of Mef2.
Chromatin was prepared from formaldehyde-fixed embryos as previously described (FBrf0202481).
Chromatin immunoprecipitated DNA was analyzed by next generation sequencing.