title: New methods for saving blood. Researchers are trying to reclaim, recycle and replenish it.
mesh_terms: D001793:Blood Preservation / Q000379:methods; D001804:Blood Transfusion, Autologous / Q000379:methods* / Q000639:trends; D002641:Chicago; D006746:Hospital Bed Capacity, 500 and over; D006801:Humans; D013514:Surgical Procedures, Operative