THE internet may be awash with bogus or untested stem cell-based treatments targeted at unwary patients, but that is no reason to condemn all “unofficial” therapies. So say researchers who last year drafted a set of international guidelines designed to crack down on “stem cell tourism”.
The team insist their new plea for more tolerance of unsanctioned trials and treatments is no U-turn (Science, ).
They argue that companies making scientifically justifiable attempts to treat patients should not be condemned, provided a new treatment has a clear clinical rationale, along with evidence that it should not cause serious…
