In this image released by the Hospital Clinic of Barcelona on Nov. 18, a patient's damaged windpipe, at left, is seen prior to a windpipe transplant, and at right, following the transplant.
In this image released by the Hospital Clinic of Barcelona on Nov. 18, a patient's damaged windpipe, at left, is seen prior to a windpipe transplant, and at right, following the transplant.
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