Sherman J. Silber USA
Sherman J. Silber is physician specializing in the field of infertility. He invented many of the infertility treatments in use today in the domain of IVF, sperm retrieval, ICSI, vasectomy reversal, tubal ligation reversal, egg and embryo freezing, ovary transplantation, and the reproductive biological clock. He performed the world's first ovary and testicle transplants, created and popularized the microsurgical vasectomy reversal, and popularized ovarian tissue freezing to preserve female fertility. He was the first to research the genetic causes of infertility in men, and developed the TESE-ICSI technique for extracting sperm from men with low or nonexistent sperm counts and direct injection of the sperm into the egg. Additionally, Silber has studied fertility in animals and performed microscopic surgery on chimpanzees, South American bush dogs, Przewalski's horse, gorillas, wolves, and other endangered species.?