title: A need for speed: Signals in drug development.
mesh_terms: D002986:Clinical Trials as Topic; D017277:Drug Approval / Q000266:history* / Q000379:methods* / Q000706:statistics & numerical data; D055808:Drug Discovery / Q000379:methods / Q000639:trends*; D015507:Drugs, Investigational / Q000494:pharmacology*; D049674:History, 21st Century
chemical_list: D015507:Drugs, Investigational