Scientists have successfully grown kidneys made of mostly human cells inside pig embryos — taking researchers yet another step down the long road toward generating viable human organs for transplant.
The results, reported September 7 in Cell Stem Cell, mark the first time a solid humanized organ, one with both human and animal cells, has been grown inside another species.
“This is a considerable progress in human-animal chimerism,” says Tao Tan, a cell biologist at the Kunming University of Science and Technology in China, who helped create the first chimeric human-monkey embryo in 2021 but was not involved in the current study.
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