Figure 18. — George de Hevesy (b. 

 1885) received the Nobel Prize in 

 Chemistry in 1943 f° r ms research 

 with isotopic tracer elements, particu- 

 larly radiophosphorus ol weight 32 

 (ordinary phosphorus is 31). 



**V 



I'll) 



Figure 19. — Carl F. Com (b. 1896) and his wife, Gerty 1. Cori (1896 1957) 



ved part of the Nobel Prize in Medicine and Physiology in 1(147 for lll<, i' Stud} 



on glycogen conversion. In the course of this study, they identified glucose l-phos- 

 phate, now usually referred to as "Cori ester," and its function in the glycogen cycle. 

 (Photo courtesy National Library oj Medicine, Washington, DA 



Bl I I I TIN 240: CONTRIBUTIONS FROM THE MUSEUM OF HISTORY AND TECHNOLOGY 



