Spanish regulations governing assisted human reproduction allows the use of donor eggs for both conventional in vitro fertilization or ICSI.
It’s necessary to carry out a spermatozoa selection before using them for any assited reproduction treatment, so that only those with high likelihood of fertilising the egg are used.
Thanks to the assisted reproduction techniques there are several treatments that can be applied to solve male infertility. Depending on the infertility degree a different technique will be applied.
The most advanced assisted reproductive techniques are focused on the selection of the spermatozoa, the embryos to transfer and the decrease in the risk of multiple pregnancies
Annexin columns or MACS allow an improvement on sperm quality, since they enable the removal of pre-apoptotic spermatozoa thanks to a component on their outer membrane.
MACS, also known as “annexin columns” or “annexin V columns”, is an assisted reproductive technique which consists of separating through magnetic attraction the best quality sperm from the abnormal or poor-quality sperm.