Bioengineers are creating human body parts to replace organs and manage life-threatening diseases. How techniques like 3-D printing and stem cell research are driving medical advances and raising ethical questions
Surgeon, oncologist, professor, and medical spokesman Lasalle Leffall believes "When you give people hope… you grant them one of the greatest of all human joys: the joy of anticipation." He joins Diane to talk about his new biography.
- LaSalle Leffall Cancer surgeon, Howard University College of Medicine professor, former president of the American Cancer Society.
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