Figure 6. Antibody specificity. Kidney sections were stained with histone modification antibodies (green), either pre-absorbed with unmodified histone 3 N-terminal peptide (H3 Pep) or modified peptide with H3K4me3 (A), H3K9me3 (B) or H3K27me3 (C), and co-localized using pseudocolor (K4me3, K9me3, or K27me3:DAPI).