Immunofluorescence staining and confocal microscopy was used to determine the trimethylated-histone H3 (Lys9) (H3K9me3) (Millipore, Billerica, MA) (1:1000). The procedures were performed as previously described32–34 (link). The specimens were incubated for 1 h with Alexa Fluor 594 goat anti-rabbit antibody (abcam, Cambridge, UK; 1:400) after incubation of the primary antibody. Images were analysed using an A1 Nikon confocal laser scanning microscope (Nikon, Tokyo, Japan).
Free full text: Click here