Reproductive biology
Discover in depth the biological processes related to fertilization, embryo implantation and all aspects affecting human reproductive biology.
![Assisted hatching](https://www.institutobernabeu.com/wp-content/uploads/2021/01/informacion_0004_Rectangulo-30-400x315.jpg)
Assisted hatching is a technique used in the in vitro fertilisation laboratory that consists of making a small hole in the membrane that surrounds the embryo, the zona pellucida (ZP), with the aim of making […]
![Why aren’t all embryos obtained from an IVF cycle suitable for freezing?](https://www.institutobernabeu.com/wp-content/uploads/2020/05/ForoIB_embriones-480x355.jpg)
Why aren’t all embryos obtained from an IVF cycle suitable for freezing?
Today, in In Vitro Fertilization treatments, it is not extraordinary to find ourselves on the day of embryo transfer with a high number of good quality embryos. For a fresh transfer we shall be electing […]
![What is a mature oocyte?](https://www.institutobernabeu.com/wp-content/uploads/2021/03/ovocito-maduro.-Instituto-Bernabeu-560x315.jpg)
In the ovary, there are structures known as follicles that contain the oocytes or ova. When a patient undergoes in vitro fertilisation (IVF) treatment, ovarian reserve is one of the most relevant pieces of data and it […]
![Embryo fragmentation](https://www.institutobernabeu.com/wp-content/uploads/2021/03/Microinyector-low-560x315.jpg)
Embryo fragmentation is a phenomenon that takes place in most embryos and its origin is not entirely clear. Some studies would seem to suggest that the fragments come from cell remains that have no nucleus […]
![A negative beta hCG test. Now what?](https://www.institutobernabeu.com/wp-content/uploads/2021/03/beta-negativa-que-hacer-1024x683-1-560x315.jpg)
A negative beta hCG test. Now what?
What happens following the wait (‘the beta hCG wait‘) which generates so much anxiety whilst, at the same time, creating the hope that our lives may be changed forever when, in the end, the result […]
![How many eggs on average are donated on an Egg Donation treatment at Instituto Bernabeu?](https://www.institutobernabeu.com/wp-content/uploads/2021/02/Ovocitos-Instituto-Bernabeu-11-cantidad-media-8-560x315.jpg)
How many eggs on average are donated on an Egg Donation treatment at Instituto Bernabeu?
In Spain, we performed 40% of all egg donation cycles in Europe. The experience accumulated at Instituto Bernabeu in the last decades, allows us to offer to our patients a high quality and personalized treatment. When […]
![Criteria for embryo classification](https://www.institutobernabeu.com/wp-content/uploads/2020/04/Clasificacion-IB_00014-1-1-480x355.jpg)
Criteria for embryo classification
Embryos develop from the moment they are fertilised up until transfer to the mother’s uterus and this development process is assessed by embryologists. The embryos that have evolved correctly and are in the best condition are selected […]
![Types of diagnostic tests to detect coronavirus SARS-CoV-2 (COVID-19)](https://www.institutobernabeu.com/wp-content/uploads/2021/06/test-tube-5065426_1920-480x355.jpg)
Types of diagnostic tests to detect coronavirus SARS-CoV-2 (COVID-19)
In December 2019, a new coronavirus (SARS-CoV-2) was identified in Wuhan (China) as the microorganism responsible for the appearance in humans of severe and lethal pneumonia in some cases, with person-to-person transmission through small droplets […]
![Security in the IVF laboratory in times of coronavirus](https://www.institutobernabeu.com/wp-content/uploads/2021/02/2o-560x315.jpg)
Security in the IVF laboratory in times of coronavirus
Given the current global situation due to the coronavirus pandemic, IVF laboratories around the world have closed their doors. At Instituto Bernabeu we follow a strict protocol for the maintenance of equipment and frozen samples […]
![The importance of freezing techniques during COVID-19 pandemic](https://www.institutobernabeu.com/wp-content/uploads/2021/03/iStock-638504688-640x480-1-560x315.jpg)
The importance of freezing techniques during COVID-19 pandemic
Embryo and / or eggs vitrification to tailor the most appropriate moment for the transfer. The health emergency generated as a result of the impact of Covid-19 has caused an unprecedented total stop to activity […]