Researchers in Newcastle University in northeast England made the ethical breakthrough by growing a miniature artificial human liver in their study of regenerative medicine, using stem cells from the umbilical cord i.e. without requiring the need for embryos.
This is very useful to pharmaceutical companies and they can use them to test new drugs without having to test on animals and humans. Also, these mini-livers could eventually be used like dialysis machines, giving time for a patient's liver to repair itself or while awaiting doctors to find a replacement liver.
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