Orza A, Soritau O, Olenic L, Diudea M, Florea A, Rus Ciuca D, Mihu C, Casciano D, Biris AS. Electrically conductive gold-coated collagen nanofibers for placental-derived mesenchymal stem cells enhanced differentiation and proliferation. ACS Nano. 2011 Jun 28; 5(6):4490-503.