American, Spanish and Japanese scientists were able to bring a hybrid of man and pig by introducing one of the three types of human induced stem cells into pork embryos. After that, the embryos were transplanted into sows for further development, which was quite successful. The human material, namely its dynamics, was tracked using a fluorescent protein, for the production of which human stem cells were programmed.
As a result, these cells gave rise to others, which scientists call the precursors of various types of tissues, in particular the heart, liver and nervous system. The development of the hybrid was carried out for 3-4 weeks, but then were destroyed due to ethical considerations. The purpose of the whole experiment and the development of the technique is to grow organs that can later be transplanted to the patient. 
