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Stem-cell generated kidneys work in animal studies

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Japanese scientists have successfully grown stem-cell generated kidneys that can excrete urine in pigs and rats, according to a study published in the Proceedings of the National Academy of Science of the United States, or PNAS. Previous attempts at urine excretion in stem-cell generated kidneys had failed.

The scientists created extra urine excretion pathways (created from cloacas), which they attached to bladders and connected to ureters, a technique they called the "stepwise peristaltic ureter." The technique was successful and prevented hydronephrosis, the researchers reported. -by Rebecca Zumoff