Lead: In December 1967, surgeons in South Africa performed the first human heart transplant. 53-year-old Lewis Washkansky survived for 18 days.

Intro.: A Moment in Time with Dan Roberts.

Content: The work of Dr. Christiaan Barnard in transplanting the heart of 25-year-old auto accident victim Denise Durvall into Washkansky built on more than two centuries of experimentation in immunology and surgery. This progress was enhanced by the late 19th-century work on antibodies by Paul Ehrlich, the blood typing research of Karl Landsteiner in 1900, and Ilya Metchnikoff’s theory of host rejection.