inviTRA Egg and sperm donation magazine
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What is it?
Law in the UK
Pregnancy with donor eggs
Egg donation & surrogacy
Becoming an egg donor
What is it?
IUI with donor sperm
Options for lesbian couples
Becoming a sperm donor
Definition and options
In vitro fertilization
Intracytoplasmic sperm injection
Preimplantation genetic diagnosis
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Assisted Reproductive Technology
COST ESTIMATE FOR EGG DONATION
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Differences between human ‘zygote’, ’embryo’ and ‘fetus’
What is the difference between a zygote, an embryo and a fetus? What are the main early development stages of humans? How similar are they to other animals?
Stages of pregnancy
When an egg is released and then fertilised by sperm, the most amazing event in life occurs: pregnancy. The development of the baby consists of several different stages throughout the nine months of gestation.
Some assisted reproductive techniques, such as in vitro fertilisation (IVF) or ICSI, perform egg fertilisation outside the woman's body. For this reason, embryo culture is necessary up to the day in which the...
Embryo culture up to blastocyst stage
Blastocyst is the stage in which embryo implantation within the uterus occurs naturally. To reach this stage, the embryo is cultured up to day 5-6 by means of a sequential culture system.
Classification of embryos according to their quality
Embryos can be classified in 4 categories –from A to D– ranging from best quality to least developed embryos. This classification is mainly visual and rather subjective, but there are also several studies to...
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