Here you shall find a clarification of the different stages of fetal growth, from the very first stage, called zygote, to the last phase, in which it is known as fetus. It will be called this way up until childbirth.
Tag: embryo cleavage
Assisted hatching is indicated in some particular cases. For instance, in cases of embryos with a thickened zona pellucida or with an abnormal colour of the zona pellucida.
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 transfer is performed.