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Scientists from Harvard University are already developing a five-organ version to test conditions such as asthma.
Scientists from the University Of Colorado School Of Medicine have reported the breakthrough discovery of a process to expand production of stem cells used to treat cancer patients. These findings could have implications that extend beyond cancer, including treatments for inborn immunodeficiency and metabolic conditions and autoimmune diseases.
Scientists have no idea why they are there - despite knowing of their existence since the invention of the electron microscope half a century ago.
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