Sir, We have read with interest—and concern—the recent paper by Li et al.(2020) about the
effect of storage time after vitrification on pregnancy among patients following the first …

Combination of in vitro maturation (IVM) and cryopreservation offers new opportunities for
women with contraindication in ovarian stimulation, and females who desire to postpone the …

Cryopreservation of the female gamete has represented an important challenge since the
beginning of assisted reproduction given its potential for overcoming several of the problems …

Background Increasing evidence indicates that closed vitrification has been successfully
used in the cryopreservation of human oocytes and embryos. Little information is available …

Currently, controlled ovarian hyperstimulation protocols commonly provide embryos in
excess of those needed for fresh transfer. Therefore, techniques have been developed to …

BACKGROUND Successful cryopreservation of oocytes and embryos is essential not only to
maximize the safety and efficacy of ovarian stimulation cycles in an IVF treatment, but also to …

Purpose The aim of this study is to evaluate the impact of oocyte vitrification on embryo
development potential and to assess the chromosome abnormalities of blastocysts derived …

Oocyte vitrification is an efficient tool which can be helpful in managing the IVF cycle. Fertility
preservation providers should inform women about their specific probabilities according to …

Vitrification, an ultra-rapid cooling technique, offers a new perspective in attempts to develop
an optimal cryopreservation procedure for human oocytes and embryos. To further evaluate …

Despite inferior results in the past compared with embryo freezing, oocyte cryopreservation
has made great strides in recent years. In fact, it has become a necessity in assisted …