Fluidigm of South San Francisco, Calif., has received US Patent No. 7,837,946, "Microfluidic device and methods of using same." The patent describes a variety of elastomeric-based microfluidic devices. According to the patent, some of the devices include arrays of reaction sites to support high-throughput analyses. Some devices also include reaction sites located at the end of blind channels at which reagents have been previously deposited during manufacture. The reagents can become suspended once sample is introduced into the reaction site, according to the patent.