Scientists have developed a method for converting cells flushed through urine into neural progenitor cells, the precursors of brain cells. Instead of using retroviruses to insert pluripotency genes in the cells, researchers employed vectors that do not integrate into cellular genome. Experiments on rat brains showed the engineered cells did not create tumors, according to the study published in Nature Methods. Precursor cells could allow for quicker development of personalized cells.
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