To test the theory that different values for the percentage of hemoglobin A
could be obtained from the same patient specimen owing to a density gradient, we prepared 1 bag (bag 1) with the patient's pretransfusion blood and 4 bags (bags 2-5) containing increasing amounts of transfused blood and therefore increasing percentages of hemoglobin A
The company is a long-standing industrial participant in the Protein Engineering Network of Centres of Excellence (PENCE), conducting research on the use of chemically modified hemoglobin as
a drug delivery agent.
Robert Furchgott of the State University of New York Health Science Center at Brooklyn, called the Duke insight "a new idea, surprising and interesting to those of us who have been using hemoglobin as