Fig. 6From: Advances in the application of gold nanoparticles in bone tissue engineering(a) Preparation of the Polydopamine-Coated GNPs (Au @ PDA NPs) and Hairpin-DNA-Based (hpDNA) Nanoprobes; (b) Intracellular Detection of miRNAs in Living Human Mesenchymal Stem Cells (hMSCs) Reprinted with permission from [88] . Copyright (2015) American Chemical SocietyBack to article page