Katherine Klapperich of Boston University in the U.S. will develop a simple device that prepares and stores nucleic acid molecules from the blood for diagnostic testing without the need for a cold chain. Current costs for tests such as those to detect HIV are high, due largely to the need to keep the samples cold during transport to district laboratories. Removing the cold chain would also enable samples to be taken at more widespread locations and transported in batches to further reduce transport costs.