Fig. 4. Comparison of histone marks in the Ahr promoter in ES and day-9 differentiated cells.
Levels of total histone H3 acetylation (panel A) and of mono-/di-/tri-methylated and acetylated H3K27, H3K9 and H3K4 (panels B, C and D, respectively) were determined by chromatin immunoprecipitation in ES cells and day-9 differentiated cells. The asterisk (*) and the pound (#) denote significant difference to ES or to day-9 differentiation: (*,#) p<0.05; (**,##) p<0.001; (***,###) p<0.001.