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Fig. 2 | Nanoscale Research Letters

Fig. 2

From: Promotion of SH-SY5Y Cell Growth by Gold Nanoparticles Modified with 6-Mercaptopurine and a Neuron-Penetrating Peptide

Fig. 2

Reaction process and characteristics of the nanoparticles. a Reaction process for preparing 6MP-AuNPs. After 6MP was added into AuNP solution, the solution color changed and precipitation was gradually formed in 5 h. b 6MP-AuNPs-RDP precipitation was dissolved when pH was adjusted to 9.0 by 0.1 M NaOH. c DLS measurement of size distribution of the particles. d Zeta potential of AuNPs, 6MP-AuNPs, and 6MP-AuNPs-RDP. e Particle structures under TEM

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