The image is historical. A team of Chinese scientists and the Spanish doctor Miguel Ángel Esteban For the first time, they have managed to generate an outline of a human organ in another animal. The experiment, carried out with humanized kidneys in pig embryos, represents a leap towards the still distant dream of using other mammals as an inexhaustible source of organs for transplants. These hybrid organisms – called chimeras after the mythological monster with the head of a lion, the belly of a goat and the tail of a dragon – still raise monumental ethical dilemmas.
