ananyo writes “Japanese scientists have coaxed stem cells into forming a 5-millimeter-long, three-dimensional tissue that the researchers labelled a liver bud — an early stage of liver development. The bud lacks bile ducts but has blood vessels, and when transplanted into a mouse, was able to metabolize some drugs that human livers metabolize but mouse livers normally cannot. The work is ‘the first report demonstrating the creation of a human functional organ with vascular networks from pluripotent stem cells,’ the team claims.”
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