Overcoming the limitations of organ transplantation and the crisis of shortage of vital organs, biomedicine today has led to new technologies such as human chimeras; A concept that arose from the heart of mythology, but is now becoming one of the serious paths of the future of regenerative medicine. In this issue, we read an article quoted by Sara Hashemi, director of the Department of Comparative Biomedical Sciences of Shiraz University of Medical Sciences, which was provided to ISNA.