Research progress of environmental factors effect in vitro fertilization and embryo transplantatio

In recent years, assisted reproductive technology(ART) is developing rapidly, especially in vitro fertilization and embryo transfer(IVF-ET) technology.The rate of clinical pregnancy in our country is about 40%, and how to improve the rate of clinical pregnancy of IVF-ET has been the focus of the scholars research content.Environmental factors including culture system, temperature, humidity, pH value and volatile organic compounds, all of these can affect the success of IVF-ET.Now the common environmental factors affecting IVF-ET research progress were reviewed as follows. Key words: In vitro fertilization and embryo transfer; Environmental factors; Assisted reproductive technique; Embryonic development