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Doctors can’t always tell if an organ for transplant is in good shape when it comes out of its cool box. They will soon. Eric McAdams, a biomedical engineer from the University of Ulster, has designed a system that keeps track of an organ’s condition in transit. A bunch of sensors attached to the organ inside the cool box measures key parameters such as oxygen levels, electrical resistance, pH and chemical changes in its tissue. Any deterioration will be obvious on the readout from a palmtop computer sitting on top of the cool box. The system is due to start clinical trials later this year.…