Tag: spermatozoa


Sperm formation

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.

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Spermatozoa selection

Improving the spermatic selection

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.

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Semen sample and sperm capacitation

Sample jar

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 process in the laboratory.

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Spermatic agglutination

Agglutination of the spermatozoa

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.

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Male factor infertility

Sterility due to altered sperm

Male sterility due to sperm factors may be produced by some alterations that affect the spermatozoa, either their vitality, morphology, concentration and/or motility.

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Egg donor compensation

Benefits of egg donation

When a healthy and young woman decides to donate her eggs, it is an altruistic gesture. Nevertheless, taking into account that the procedure could present some annoyances and the regular visits to the clinic she has to do, a compensation is provided to her.

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Annexin V columns

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.

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Male sterility

Male sterility causes

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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