title: Perspective, the one most responsive to change.
authors.affiliation: Molecular Tracer LLC, Bethesda MD 20814. Electronic address: wceckelman@gmail.com.
authors.forename: William C
authors.initials: WC
authors.lastname: Eckelman
authors.affiliation: National Institute of Allergy and Infectious Disease, Betnesda MD 20817.
authors.forename: Chuen-Yen
authors.initials: CY
authors.lastname: Lau
authors.affiliation: Nuclear Medicine Dept Warren Grant Magnuson Clinical Center, Bethesda MD 20814.
authors.forename: Ronald D
authors.initials: RD
authors.lastname: Neumann
mesh_terms: D055808:Drug Discovery; D057054:Molecular Imaging; D019275:Radiopharmaceuticals
chemical_list: D019275:Radiopharmaceuticals