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The new work is a "big step forward" in finding new ways to generate viable organs for human transplants, but it comes with some ethical considerations ....
T HE ANCIENT GREEKS were good at inventing fantastical animals. The chimera, for instance, was “a thing of immortal make, not human, lion-fronted and snake behind, a goat in the middle”. It was eventually slain by Bellerophon, with help from his flying horse. Listen to this story Enjoy more audio and podcasts oniOSorAndroid. Not all chimeras are mythological. To biologists, the term describes organisms whose bodies consist of cells from two distinct lineages. In twin pregnancies, for example, one twin can occasionally absorb the other. The resulting individual is built from cells with separate genomes. A 2019 forensic-science conference discussed the case of a man who had received a bone-marrow transplant. Since bone marrow produces blood cells, subsequent ....