Scientists at the University of Virginia School of Medicine have grown a mouse embryo with a beating heart in a test tube from stem cells.
The authors state that they have found a way to teach stem cell aggregates to initiate embryonic development. Therefore, an embryo-like object develops from stem cells, which repeats the stages of development one after another. Thanks to this, you can get different types of tissue that a mouse embryo has.
Also, for the first time in vitro, the nervous system develops with the formation of a neural tube.
The muscles, blood vessels, intestines and nervous system of the embryo begin to develop. But this embryo is unusual: it was made in the laboratory from mouse embryonic stem cells and is the most complex mammalian model ever created in vitro, in vitro.
It is noted that the previous models did not develop properly, or were improperly organized, or suffered from other problems, but in the new model, the embryo has a notochord, the digestive tract begins to develop, and the heartbeats.
Scientists expect that the ability to grow organs with the necessary variety of tissues, vessels, and innervation will ultimately overcome the lack of organs for transplantation.