Objectives: During human in vitro fertilisation (IVF) treatments, embryologists attempt
to select the most viable embryos for embryo transfer (ET). Previously, embryos were
evaluated based on light microscopic morphological parameters. However, this is currently
accomplished by morphokinetic analysis of time-lapse recordings. This technique provides
us the opportunity to observe cytoplasmic strings at the blastocyst stage. The aim
of this work was to examine the relationship between the presence of cytoplasmic strings
(CS) and the embryo viability in human in vitro fertilised embryos.
