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. Author manuscript; available in PMC: 2016 May 30.
Published in final edited form as: Nanoscale. 2015 Jun 21;7(23):10330–10333. doi: 10.1039/c5nr01833a

Fig. 1.

Fig. 1

(a) Cell uptake studies. P@FA-FRTs (IRDye800 labeled) were efficiently internalized by 4T1 cells while parental ferritins were not. Red, IRDye800; blue, DAPI. Scale bars, 50 µm. (b) MTT cell viability assay results. Concentration dependent cell death was observed with P@FA-FRT-mediated PDT. Light irradiation: 671 nm, 100 mW/cm2 for 200 s. (c) EthD-1 cell assay results. When extending the incubation time, there was an increased level of cell death, marked as red fluorescence. Red, EthD-1 (ex/em = 528/617 nm). Scale bars, 50 µm.