Figure 3.

(a) Confocal microscopy images of differentiated neurospheres on day 7; (b) average percentages of differentiated cell phenotypes after 7 days in culture; (c) schematic showing LbL assembly of polyelectrolytes based on electrostatic interactions for tuning cell adhesive properties using cross-linking; (d) schematic illustration of the fabrication and cell uptake of LbL assembly multilayers embedded with β-estradiol-silica nanoparticles onto substrates; (e) mixed element map of the cross-section and upper surface of different catechol-based freestanding membranes; (f) Osteopontin immunofluorescence images of cells after 14 days cultured on different catechol-based freestanding membranes. Reprinted from [24,72,77] with permissions from American Chemical Society, Elsevier, and Wiley-VCH.