Foreword

Dr. Mohammad Mehdi Ommati obtained his M.Sc. and Ph.D. degrees under my supervision in the Department of Animal Science, College of Agriculture, Shiraz University, Shiraz, Iran. I was fortunate to guide such a talented and highly enthusiastic student in his desire to be trained in reproductive physiology. He was a top student amongst his peers throughout his graduate and undergraduate studies, simultaneously being chosen as a member of the National Elites Foundation (INEF), Iran. After successfully completing his sabbatical studies at Shanxi Agricultural University (SXAU), where he served as an assistant professor for about five years, Dr. Ommati joined the College of Animal Science and Technology at Henan University of Science and Technology, China, where he is currently an associate professor. Believing in quality research, Dr. Ommati has always carried out his research with utmost diligence and meticulously. This is borne by the fact that his research findings have been published in many reputable periodicals, and books, and presented at international scientific meetings, as well as receiving several international awards. He is currently on the editorial boards of several reputable journals and is also a visiting professor at the Shiraz University of Medical Sciences, Shiraz, Iran. His recent endeavor is the current book aimed at presenting the basic knowledge and current advancements in biological sciences, making it a useful source for students of general biology, animal science, medicine, and veterinary science. I believe he has all the essential qualities for writing this book. I wish him the best in pursuing his future scientific activities.

FOREWORD II

After obtaining his degree in Animal Sciences in 2009, Professor M. Mehdi Ommati initiated a successful career in reproductive physiology. He is a highly qualified researcher, teacher, editorial member, and reviewer in several journals, with very important research in reproductive toxicology. His articles have a high citation index, and he has received awards and recognition in countries such as China, India, Mexico, etc. Professor Ommati is an outstanding example of a young researcher who, with great effort, dedication, and commitment, has managed to position himself as one of the most outstanding researchers at an international level, with recognized prestige. His achievements reflect his great capabilities, making him a great motivation for new generation of young researchers. Despite his achievements, Professor Ommati continues to work with great dedication and enthusiasm, inspiring his undergraduate and graduate students to pursue distinguished careers in the biological sciences. In addition, Professor Ommati has always shown the best willingness and ability to establish international collaborations with his academic peers, with a great vision for research. This book is intended for postgraduate students, but it can also be useful for students in biology, animal sciences, and related medical disciplines as a support in their training and to reinforce their knowledge. The lecture of this book is enjoyed while reading and reinforces the basic knowledge that every biological sciences student should know, regardless of their specialization. The glossaries are very complete, the self-assessments reinforce what was learned in each lesson, and the reading comprehension is excellent. It is a very didactic book, an enormous effort to summarize the most important issues about molecules, cells, systems, organisms, and their habitat. My recognition to Professor Ommati for his contribution, not only to the field of reproductive toxicology but also as a generous and grateful teacher for the gifts he has received from God.