Effect of mesenchymal stem cells and polyvinyl alcohol-coated selenium nanoparticles on rats with Alzheimer-like phenotypes oleh Siamak Shahidi, Sara Soleimani Asl, Bahareh Gholamigeravand, Simimn Afshar, Nasrin Hashemi-Firouzi, Alireza Samzadeh-Kermani, Mahsa Majidi, Kimia Amiri