OBJECTIVES To study the potential of embryo transfer after 3, 4 or 5 days of embryo culture under the German embryo protection law according to which only a maximum of three zygotes are allowed to be cultured for embryo transfer. STUDY DESIGN In a prospective study, 273 patients with assisted reproductive treatment were randomly allocated for transfer on days 3, 4 or 5. Pregnancy and implanta...

Embryo transfer is an important technology to improve and increase the high genetic value cattle in a short period in both daily and beef industries. This manuscript discussed current status of embryo transfer technologies in Japan and the world. The conception rates of embryo transfer both in fresh and frozen embryos were stable last two decades in Japan. Therefore, embryo transfer in Japan is...

Background: To explore and compare the dual embryo transfer DET with single embryo transfer SET weather electively or not, in more viewpoints like financially, and scientifically and finding out which of these policies may give better outcome by analyzing both in a neutral broad spectrum manner. Materials and Methods: A computerized comprehensive search studies ended in finding of 62 articles o...

The transfer of preimplantation embryos to a surrogate female is a required step for the production of genetically modified mice or to study the effects of epigenetic alterations originated during preimplantation development on subsequent fetal development and adult health. The use of an effective and consistent embryo transfer technique is crucial to enhance the generation of genetically modif...