Fig. 7.

MG-63 cell attachment on cellulose films after 1 h incubation at 37 °C under 5% CO₂, n = 3 and error bars show standard error. Films were immersed for 24 h prior to seeding in DMEM medium alone or DMEM medium containing FBS or RGD as appropriate. Significant cell attachment on cationic cellulose films was achieved without the need for FBS or RGD growth factors. Values significantly different from unmodified cellulose films were indicated by the confidence values *p < 0.05, **p < 0.01 and ***p < 0.001. To indicate significant differences between two values the symbol black dot was used to refer to the p value