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.
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.
The landscape of family building, pregnancy and conception has changed dramatically in this century. Over the past 20 years, the number of births from gamete donation has increased exponentially from 30,000 to 60,000 in the United States (1).
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.
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