EditorialDonald Kennedy, then commissioner of the Food and Drug Administration, stands while speaking during a hearing on Capitol Hill in Washington in 1977. (George Tames/The New York Times)
Editorialeonardo da Vinci, Sagittal and Horizontal Sections of the Human Head with Layers of the Head compared with an Onion. K/P 32r (ca. 1490). On this page Leonardo outlined in a sagittal and transverse plane the 'cell doctrine' concept. The brain cavity is ...
Editorialeonardo da Vinci, Sagittal and Horizontal Sections of the Human Head with Layers of the Head compared with an Onion. K/P 32r (ca. 1490). On this page Leonardo outlined in a sagittal and transverse plane the 'cell doctrine' concept. The brain cavity is ...