(A) Heat map showing H3K4me3 and H3K27me3 differences between hair (H) and non-hair (NH) cell types (H cell profile minus NH cell profile) around the 5′ end of genes (-1 kb to +1 kb from transcription start site). The 946 H cell-enriched genes are ranked from highest to lowest fold difference in expression level between H and NH cells. Yellow represents higher modification levels in H cells while blue indicates lower levels in H cells, black represents no difference, and gray indicates no data where analysis was stopped when another genomic feature was encountered. (B) Same as in (A) except that the 118 NH cell-enriched genes were used, and these were ranked from highest to lowest fold difference between H and NH cells. Since the subtraction of profiles was done in the same direction as in (A), blue represents higher modification levels in NH cells while yellow indicates lower levels in NH cells. (C) Same heat map rows in (A) clustered into 3 groups (kmeans = 3) over -1 kb to +1 kb. White bars delineate the three clusters. (D) Same heat map rows as in (B) clustered into 3 groups. All heat maps are shown at the same contrast level. (E and F) Comparison of H3K4me3 and H3K27me3 profiles in H and NH cells on two H cell-enriched genes, At5g70450 and At3g49960, respectively. Genes above the x-axis are on the top strand while those below the line are on the bottom strand. Dotted boxes surround the gene of interest in each case. (G and H) Comparison of H3K4me3 and H3K27me3 profiles in H and NH cells on two NH cell-enriched genes, At1g66800 and At5g42591, respectively. See also .