ASRM standard embryo transfer protocol template: a committee opinion
Standardization improves performance and safety. A template for standardizing the embryo transfer procedure is presented here with 12 basic steps supported by published scientific literature and a survey of common practice of SART programs; it can be used by ART practices to model their own standard protocol. More here.
Sex and gender: you should know the difference
Embryos do not have a ‘‘gender’’; rather, they have a ‘‘sex.’’ Gender refers to social and cultural distinctions between sexes, not biological ones. An embryo’s ‘‘maleness’’ or ‘‘femaleness’’ should therefore be defined by its biological sex (i.e., sex chromosome pair). Više OVDJE.
Gamete donation: current practices, public opinion, and unanswered questions
However, such numbers are merely estimates and are likely to be poor estimates because there are few tracking systems. Additionally, in the 1980s and 1990s the majority of U.S. recipients of donor sperm were straight, married couples experiencing infertility. Presently, estimates suggest the majority of donor-sperm users represent a different demographic: 50% single women and 33% same sex or transgender couples. Further, the number of sperm banks has increased, and the creation of theDonor Sibling Registry (DSR) has paved theway for offspring from thesame donorto connect. The DSR reports that among its registrants 94% of families used sperm donation, 5% used donated oocytes, and 1% used donated embryos. Više OVDJE.
Sperm in space produce healthy mouse pups on Earth
Cosmic radiation on the ISS is about 100 times greater than that on Earth, and increased radiation exposure is known to increase DNA damage in somatic and gamete cells. Once returned to Earth, the mouse sperm were compared with the control samples and assessed for damage; this included analysing their morphology, DNA, their ability to be used in fertilisation techniques, the in vitro development of subsequent embryos produced, and the normality of their offspring. More here.
Oocyte and ovarian tissue cryopreservation in European countries
Oocyte and ovarian tissue cryopreservation in European countries: statutory background, practice, storage and use. Više ovdje.
