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Z-projections of immunolabelling with (A) H3K9me3-specific antibodies (green) or (B) H3K27me3-specific antibodies and staining with Hoechst (red) in control or SPT16-1 RNAi at early stages of development. Dashed white circles indicate the two developing MACs. White arrowheads indicate the MICs. The other Hoechst-stained nuclei are fragments from the maternal somatic MAC. Scale bar is 10 μm.
