When a killer infection spreads in the movies, the doctors triage and isolate the patients while a medical biologist races to diagnose the illness and find a cure. Inevitably a national emergency follows as the virus or bacteria wipe out an unsuspecting population. While this may be Hollywood's vision, Reg Beer, the Medical Diagnostics Initiative Leader at Lawrence Livermore National Laboratory, explains the Lab-on-Chip technologies he develops for time-critical Molecular Diagnostics applications. Series: "Field Trip at the Lab: Science on Saturday" [Science] [Show ID: 25750]