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. 2016 May 6;2(5):e1600061. doi: 10.1126/sciadv.1600061

Fig. 2. Viability of HEK-293 cells on OLED microarrays.

Fig. 2

(A to C) Microscopic images (epi-illumination) of wild-type HEK-293 cells (HEK-293wt) adhered on poly-l-lysine/fibronectin–coated OLED microarray surface at 12, 36, and 60 hours after cell seeding. (E to G) Microscopic images (phase contrast) of HEK-293wt cells adhered to standard cell culture dishes (with grid) at 12, 36, and 60 hours after cell seeding. Cell density at seeding was equal for the OLED array and culture dish. (D and H) Epifluorescence images of propidium iodide (PI) cell death staining performed after 60 hours of culture on OLED arrays and standard culture dishes, respectively.