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Fig. 2 | BioMedical Engineering OnLine

Fig. 2

From: New epiretinal implant with integrated sensor chips for optical capturing shows a good biocompatibility profile in vitro and in vivo

Fig. 2

Viability of L-929 directly cultivated on glass and on flexible polyimide bases. a, b, d, e Fluorescence microscopy allowed for differentiation between vital (green) and dead (red) L-929 cells 72 h after seeding. ac Flexible polyimide base; df sensor chip. Note the white arrow in e showing dead cells on the edge of the sensor chip. c, f The left graphs show the normalized total cell number. The right graphs present the quantity of dead cells as percentage of the total cell number. For each substrate, 3 to 6 randomly selected image sections were analyzed. The total cell amount was normalized to the total cell amount on glass. The results were compared to glass. Bars were calculated as mean ± SD (unpaired t-test; ns: not significant, *p < 0.05; flexible polyimide bases: n = 4 individual experiments; sensor chips: n = 8)

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