Approximately 500,000 Tomato-positive mutant or heterozygous olfactory epithelial cells were sorted from a single mouse. Each sample was crosslinked, sonicated and subjected to ChIP with either anti-H3K9me3 or anti-H3K4me3. Libraries were prepared from precipitated DNA and sequenced, producing approximately 50 million 50 bp reads per sample. Libraries were prepared using Illumina Prep Kit