Fig. 7. Localization of post-translational methylation modifications of histone H3 in wild-type (J1) and Dnmt1C/C (c/c) ES cells. (A) Immunostaining with an antibody specific for histone H3 trimethylated at lysine 27. (B) Immunostaining with an antibody specific for histone H3 trimethylated at lysine 4. (C) Immunostaining with an antibody specific for histone H3 trimethylated at lysine 9.