A strain expressing mesodermally expressed SBP-tagged His2B was used to label nuclei for subsequent fluorescent "cell" sorting. Two independent biological replicates were used.
Chromatin immunoprecipitation of His3 H3K27me3 modification.
Chromatin was prepared from formaldehyde-fixed embryos as previously described (FBrf0202481).
Chromatin immunoprecipitated DNA was analyzed by next generation sequencing.