Fig. 5From: Promotion of SH-SY5Y Cell Growth by Gold Nanoparticles Modified with 6-Mercaptopurine and a Neuron-Penetrating PeptideThe nanoparticles promoted neurite growth. Images (a) and neurite length (b) after the cells were respectively treated with RDP, 6MP-AuNPs, and 6MP-AuNPs-RDP for 24 h. The cells with only solvent were used as control. The values were averaged for 200 neurites. *p < 0.05 and **p < 0.01 compared with the controlBack to article page