Severo Ochoa
Severo Ochoa de Albornoz (Spanish: [seˈβeɾo oˈtʃoa ðe alβorˈnoθ]; 24 September 1905 – 1 November 1993) was a Spanish - American physician and biochemist, and joint winner of the 1959 Nobel Prize in Physiology or Medicine with Arthur Kornberg.