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Scientific breakthrough: Human blood stem cell isolated
For the first time since stem cells were discovered by Dr. James Till and Dr. Ernest McCulloch at the Ontario Cancer Institute 50 years ago, scientists have isolated a human blood stem cell in its purest form – as a single stem cell capable of regenerating the entire blood system. -
Costly 'defensive medicine' unique to U.S.: survey
In a recent survey of physicians in Canada, the U.K., New Zealand and Sweden, no doctors reported practising defensive medicine, which is defined as ordering medically unnecessary tests, treatments or consultations in order to avoid lawsuits. This contrasts with similar studies of U.S. physicians.