Dr. Jing-He Tan obtained his PhD in 1988 from Northeast Agricultural University, Harbin, PR China. He is now working as a professor of animal reproduction and embryology at the College of Animal Science and Vet Medicine, Shandong Agricultural University, PR China. His research interests are improving oocyte quality, reproductive health, and the efficiency of human-assisted reproduction technology and animal biotechnology. His current research includes: (i) mechanisms and control of oocyte maturation and aging; (ii) optimization of protocols for IVF, animal cloning, and transgenic animal production; and (iii) effects and mechanisms of maternal stress on oocytes, embryos, and offspring behavior. He has published over 300 research papers, including over 130 published in SCI journals.