Properties of Retinal Precursor Cells Grown on Vertically Aligned Multiwalled Carbon Nanotubes Generated for the Modification of Retinal Implant-Embedded Microelectrode Arrays

Figure 4

Effects of direct contact on viability of R28 cells. Cells were plated on a glass substrate and on the blank, MWCNT-Fe, MWCNT-Fe-Pt, and MWCNT-Fe-Ti wafer slices ( individual experiments), stained using FDA/PI, and counted 72 hours after seeding. For each substrate, 8 randomly selected microscopic fields were analyzed. Data are represented as mean ± SD. They were compared to the glass control and analyzed using unpaired two-tailed test. (a) The total cell numbers were normalized to the respective glass control. , MWCNT-Fe; , MWCNT-Fe-Ti. (b) The quantity of dead cells is shown as a percentage of the corresponding total cell number. , MWCNT-Fe.

(a)

(b)