About 10% of women of reproductive age are unable to conceive or carry a pregnancy to
term. Female factors alone account for at least 35% of all infertility cases and comprise a …

BACKGROUND Although laboratory procedures, along with culture media formulations,
have improved over the past two decades, the issue remains that human IVF is performed in …

Objective: To determine the relationship between blastocyst score and pregnancy outcome.
Design: Retrospective review of blastocyst transfer in an IVF clinic. Setting: Private assisted …

The transfer of the human embryo at the blastocyst stage during an in-vitro fertilization
procedure is a way of increasing implantation rates. This, in turn, means that significantly …

With the worldwide move towards single embryo transfer there has been a renewed focus
on the requirement for reliable means of assessing embryo viability. In an era of …

During early mammalian embryogenesis, changes in cell growth and proliferation depend
on strict genetic and metabolic instructions. However, our understanding of metabolic …

Bovine and ovine embryos exposed to a variety of unusual environments prior to the
blastocyst stage have resulted in the development of unusually large offspring which can …

BACKGROUND Vitrification is now a commonly applied technique for cryopreservation in
assisted reproductive technology (ART) replacing, in many cases, conventional slow cooling …

The effectiveness of blastocyst culture and transfer in human in-vitro fertilization (IVF) was
evaluated in a prospective randomized trial in patients having a moderate to good response …

Early embryonic arrest is one of the major causes of female infertility. However, because of
difficulties in phenotypic evaluation, genetic determinants of human early embryonic arrest …