Today, about one in seven couples have difficulty conceiving, and although infertility is traditionally considered women's issue, the problem often lies in a man. Creation of sperm in the body is so complex and lengthy that it seemed as if the process is impossible to recreate in the laboratory. Scientists have had some success in this regard in recent years, but the results of scientists from China are the most promising. Experts not only managed to create mouse sperm in the laboratory - they could also use it to fertilize an egg, which led to the birth of offspring. It is important to note that the newborn mice were completely healthy, and soon gave birth to their own offspring.

To create sperm researchers have used embryonic stem cells which are capable of conversion into other cell types, and leather pieces. Adding specialty chemicals and hormones helped turn the cells into spermatids, which are the male sex cells in the 4th stage of development. At this stage spermatids have no tails, inherent in the sperm, but they can fertilize an egg. The findings have enormous potential for the treatment of male infertility, experts say.

In the near future, scientists plan to try to create human sperm, noting that this development may become available in the reproductive clinics for 10 years. Using human skin particles as a raw material for new sperm allow men to have children are carriers of their genes. Since currently available infertility treatments do not work for many couples, experts are hoping that the new technology will significantly enhance the success of the treatment of male infertility.