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Confocal microscopy images of SKOV-3 cells after incubation with (a–d) free DOX, (e–h) 1 h with DOX-HA-SPION, and (i–l) 4 h with DOX-HA-SPION. (a,e,i) DAPI channel showing location of nucleus; (b,f,j) DOX channel; (c,g,k) overlay of DOX channel with DIC images; and (d,h,l) overlay of DAPI, DOX channels with laser images. The scale bar is 10 μm.
