A slow freezing/rapid thawing method for the cryopreservation of human oocytes has been employed using a sodium-depleted culture media. In 53 frozen egg-embryo transfer (FEET) cycles, a 60.4% survival rate post-thaw was obtained and a 62.0% fertilization rate following intracytoplasmic sperm injection. Overall pregnancy rates were 26.4% per thaw attempt, 30.4% per patient, and 32.6% per embryo ...

Background and Aim: Applying Assisted Reproductive Technologies (ARTs) is increasing. A critical step in ART the frozen embryo transfer, which endometrium thickness has great significance outcome. In this case, will be transferred during next cycle. There are several ways to prepare an for transmitting embryos; however, choosing best method remains debated. The present study aimed evaluate preg...

A total of 364 consecutive patients requesting in-vitro fertilization (IVF) treatment were divided randomly into two groups. In the first group, two embryos in the original IVF cycle were allowed to divide prior to transfer, with any remaining embryos being cryopreserved at the pronucleate (PN) stage. In the second group, all the embryos were allowed to divide to the early cleavage (EC) stage, ...

ABSTRACT Global advances in reproductive biotechnology have allowed for the transfer of embryos from donor females with high genetic merit to recipients using cryopreservation technique, which preserves an embryo excellent quality and viability, thereby achieving a feasible pregnancy rate. The objective this study was evaluate viability Holstein that been cryopreserved more than 40 years under ...

background: the use of assisted reproductive technology (art) is increasing in the world. the rate, efficacy and safety of art are very different among countries. there is an increase in the use of intra cytoplasmic sperm injection (icsi), single fresh embryo transfer (et) and frozen-thawed embryo transfer (fet). objective: the objective of this study was to compare pregnancy rate in fresh et a...

The assisted reproductive technologies (ARTs) as tailored to the production of rhesus monkeys at the Oregon National Primate Research Center (ONPRC) are described. Efficient fertilization of mature oocytes recovered by aspiration from females subjected to follicular stimulation was achieved with fresh or frozen sperm by intracytoplasmic sperm injection (ICSI). Embryo development to the early cl...

Objective: To compare the perinatal and maternal results of intrahepatic cholestasis (ICP) in fresh frozen-thawed embryo transfer (ET) pregnancies.
 Material Method: This research was performed retrospectively, including fourty-five pregnant women applied to our hospital between October 2010 January 2021. Two groups have been determined, group:1 (Frozen thawed; n:21) group:2 (Fresh; n:24)....