Scientists from the University of Maastricht announced that they found a way to grow embryos without using the egg and sperm.
To obtain such an "ethically permitted" embryo, they needed two embryonic stem cells of different types. By combining them into a single whole, the researchers were able to obtain the embryo at the blastocyst stage. This is the name of one of the earliest stages of embryo development in mammals, occurring approximately on the 5th-7th day after fertilization. However, until the blastocyst obtained does not develop further. As the scientists themselves say, "the cells are not properly organized and look like a disorganized embryo".
The goal of creating blastocysts in the laboratory was to study the problems of embryo implantation in the uterine wall. This process should normally occur about the 3rd-5th day after conception. With some types of infertility implantation is not carried out.
To investigate the problem, embryos are necessary, and their production by natural means is associated with ethical limitations and legislative prohibitions.
Also, embryos are required for research on the effects of drugs on the development of the human embryo.
The new technology, according to scientists, after three years allows you to grow a mouse, created by the laboratory without the participation of sex cells. And this means that in 20 years, the creation of a human embryo and, as a consequence, the army of clones. Although today human cloning is strictly forbidden.
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