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Fertility treatments using donor sperm or eggs in the USA
Egg and sperm donation allows many people and couples to be on parenthood. In the United States, gamete donation is allowed either with an anonymous donor or, conversely, with a known one. Besides, it is aimed at...
It takes place in testicles and lasts two months and a half approximately. It is the maduration of some cells that split, madurate, and eventually become spermatozoa.
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.
Semen sample and sperm capacitation
Obtaining a sperm sample and carrying out the capacitation is something that is done for multiple assited reproduction techniques. Capacitation happens naturally, but there are also techniques to induce this...
The spermatic agglutination consists on the formation of heaps of spermatozoa. These adhesions may be through the head or the tail and they prevent the spermatozoa from displacing and fertilising the egg.
Male factor infertility
Male sterility due to sperm factors may be produced by some alterations that affect the spermatozoa, either their vitality, morphology, concentration and/or motility.
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.
Depending on the nature of the problem, male sterility may be due to several factors, such as: endocrine factors, testicular factors, post-testicular factors, and, finally, sperm factors.
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