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Shrinkage of nuclei and chromatin condensation in MNV-1-infected RAW264.7 cells. Monolayers of mock-infected (A) or MNV-1-infected (MOI of 4) (B) RAW264.7 cells were fixed with methanol at 28 h p.i. and stained with DAPI. Nuclei were visualized by fluorescence microscopy using filters for UV excitation.
