Biosynthesis of silver nanoparticles with antimicrobial and anticancer properties using two novel yeasts oleh Xin Liu, Jia-Le Chen, Wen-Yu Yang, Yu-Cheng Qian, Jing-Yu Pan, Chen-Nianci Zhu, Li Liu, Wen-Bin Ou, Hong-Xin Zhao, Dian-Peng Zhang