Scientists successfully transformed old blood cells into young brain stem cells using a direct conversion method. This process involved delivering two transcription factors via a virus to red blood cell precursors. The cells began to express neural-like proteins by the twelfth day, shedding their original blood-like characteristics. Remarkably, these newly formed neural stem cells exhibited a continuous reduction in epigenetic age. Over 50 to 100 days, the cells progressively de-aged, reaching approximately 5 percent of the donor's original age. The majority of age-related genetic traits were reset within about 50 days of the conversion. In essence, the converted cells effectively became 60 years younger in just 50 days. This groundbreaking research was conducted by scientists from the University Hospital of Bonn and the University of Bonn. Their findings and methodology were detailed in the journal Aging Cell.