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Nuclear staining with 5 µg/ml Hoechst 33342 was performed 1, 5, 7, and 14 days after inoculation (A). Vital dye staining for ER and mitochondria five days after inoculation. Hoechst 33342 dye was used as nuclear counterstain (B). Internalized red fluorescent NPs co-localize with the lysosomal dye LysoSensor™ Green DND-189 but not with the nucleus (blue) (C).
