Since its formation to the fertilization of the egg, spermatozoids have to cross a complicated path full of obstacles. Only one spermatozoid will overcome all the barriers and fertilize the egg, creating therefore a new being.
Tag: zona pellucida
Using several techniques the quality of the eggs can be found out to know the reproductive potential of a woman, and if needed, which assisted reproduction technique to apply.
It’s the beginning of a long process. Many women don’t even know they are pregnant during the first month. The most important event is the implantation of the embryo in the endometrium.
That week marks the finish of the first month, there are no important physical nor emotional changes. If they are not tested, they don’t even realise they are pregnant.
Assisted hatching is a technique used to make it easier for the embryo to break through its protein-rich coat, the zona pellucida (ZP). The aim is to enable implantation and, therefore, increase the chances for pregnancy in some particular cases.
Assessment of embryo quality is determined by checking their development once a day from the moment of fertilisation to the day in which embryo transfer is performed –on day 3 or day 5, depending on the case.