organism: Caenorhabditis elegans
attributes.tag: source_name
attributes.value: Mixed stage early embryos
attributes.tag: strain and  genotype
attributes.value: N2 wild type
attributes.tag: purity of sample
attributes.value: 100%
attributes.tag: mnase-digestion level
attributes.value: Heavily digested and mono-nucleosome enriched
attributes.tag: cross-linking
attributes.value: Embryos were cross-linked in 1.85% formaldehyde for 30 min