The linear motor asks how you see the mosaic of humans and animals. After the scientists successfully developed the chimera of humans and pigs for the first time last year, scientists of Stanford University in the United States recently introduced human stem cells into sheep embryos and obtained human sheep inlays. Together, the research team has successfully transplanted the pancreas into mice.
The linear motor wants to say that human and animal chimerism is a controversy on ethical issues, but this breakthrough result may help alleviate the global shortage of organ donations.
Interestingly, more than a year ago, the U.S. government had stated that it would provide funding for such controversial experiments, but then withdrew funds after receiving more than 20,000 complaints from animal rights groups. The controversy includes people¡¯s concerns about the weird image of the ¡°human head¡± or ¡°face of the sheep¡± in traditional images. In fact, as stem cells and genetic engineering have paved the way for the generation of chimeras between different species in recent years, scientists hope to breed larger chimeras such as pigs or sheep with human organs.
Everything depends on how much human cells can be active in animals. If they spread farther than expected, such as entering the brains of experimental animals, then for ethical reasons it would be impossible to approve such trial estimates. If these cells are in the process of development, not only will they fit into the desired organ, but will also participate in the development of other organs, such as the nervous system or the reproductive system. This will bring with them very complicated ethical issues. This is the main reason why people are worried about such research.
As the first person to use the adult somatic cell as a nuclear donor in China, Liu Zhonghua said frankly that from a practical point of view, this technical route is widely recognized by the academic community, but in practice, human The proportion of cells in animal embryos is not very high and there is a long distance from the actual application. What do you think about linear motor today? Let¡¯s talk about it.
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