Trace evidence from gunshots, hair, and more helps zero in on fine details
Key differences between PCR and qPCR
The United States government—nearly 14 years after September 11, 2001— continues to invest heavily in homeland security. In fact, the president’s 2015 budget calls for US$38.2 billion for the Department of Homeland Security, and that equals more than 20 percent of the country’s gross domestic product (GDP).
Once gas chromatography (GC) separates a sample into its component parts, a detector identifies them. All detectors provide certain benefits and struggle with some limitations. Whether some feature is beneficial or detrimental, however, depends on the sample and the application.