(For ingenious elucidation of the cyclic GMP signaling pathway of nitric oxide and for essential discoveries that led to establishing the link between endothelium-derived relaxing factor and nitric oxide.)
(For the landmark discovery of endothelium-derived relaxing factor (EDRF), now known to be nitric oxide, and other research findings that have profound implications for the treatment of cardiovascular conditions and other diseases.)
(For groundbreaking work and bold, visionary and imaginative leadership in the development and commercialization of the Hemophilus influenzae type b vaccine and bringing the vaccine to market, leading to the eradication of Hemophilus influenzae type b, typhoid, and pneumococcus.)