National Assisted Reproductive Technology Registers: Questions and Answers |Biomedgrid

We analyzed some parameters, affecting the success rates of in vitro procedures taken from the national registers of Japan, China, and the USA. We compare birth rates for frozen embryo transfer (FET) and fresh ET after IVF / ICSI procedures, and we believe one of the reasons for the higher FET success rate is the “therapeutic” effect on embryos following the freezing / thawing procedure. This phenomenon has been described in our “Theory about the Embryo Cryo-Treatment”. We believe that cryopreservation helps to partially eliminate the negative impact of air pollution caused by the pollution of the environment on the development and implantation of embryos.