Fig. 6. A field of DAPI stained nuclei from an embryo at the seventh nuclear division (128 nuclei). Only one nucleus (insert) exhibits some DAPI brilliant spots over a dull mass of chromatin. Note that DAPI-positive spots are labeled by HP-1 antibody signal in this nucleus. No other cells show an appreciable HP-1 immunostaining. Insert shows DAPI staining (left) and merged images (right). In merged images, DAPI fluorescence is in red and HP-1 immunolabeling in green. Scale bar: 10 µm.

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