Scientists have successfully grown 'mini kidneys' in the lab and grafted them into live mice, revealing new insights into the metabolic defects and a potential therapy for polycystic kidney disease. "Mini kidneys," or kidney organoids, are kidney-like structures grown in the lab using stem cells. In the study, researchers grew the organoids using skin cells derived from patients with polycystic kidney disease (PKD). People with PKD often progress to end-stage kidney disease between their 50s and 60s, with the standard treatment options available being dialysis or a kidney transplant. One other option is the drug Tolvaptan, which is very costly...