Intracytoplasmic sperm injection (ICSI) is an in vitro fertilization (IVF) procedure that directly injects a single sperm cell into an egg’s cytoplasm. To prepare gametes for the development of embryos that can be transferred to the maternal uterus, this procedure is used.
Within classic IVF and ICSI, there are many distinctions. The measures to be taken prior to and after insemination, however, are the same. In terms of insemination, ICSI needs only one sperm cell per oocyte, while IVF requires between 50,000 and 100,000. This is because the acrosome reaction has to take place and IVF has to be involved in thousands of sperm cells. The egg is converted into a proembryo once fertilised and it has to be moved to the uterus to continue its development.