简介:Anearlywarningsystemtocounterbioterrorism,theAutonomousPathogenDetectionSystem(APDS)continuouslymonitorstheenvironmentforthepresenceofbiologicalpathogens(e.g.,anthrax)andoncedetected,itsoundsanalarmmuchlikeasmokedetectorwarnsofafire.LongbeforeSeptemberii,2001,