Fig. 1From: Preparation of PDA-GO/CS composite scaffold and its effects on the biological properties of human dental pulp stem cellsa Color change of GO and GO-PDA dispersion. A:GO;B:PDA-GO. b The general appearance of CS and different mass fraction PDA-GO/CS composite scaffolds. A:CS;B:0.1%PDA-GO/CS;C:0.3%PDA-GO/CS;D:0.5%PDA-GO/CS;E:0.7%PDA-GO/CSBack to article page