A genetic "roadmap" will help to find treatments for diseases, by looking at the signatures that drugs leave behind. A newly developed genetic "roadmap" promises to streamline the drug discovery process. Called the Connectivity Map, this public database matches drug compounds with diseased cells and the processes occurring within them. "The reason it's so difficult to find those disease and drug connections is that the languages in which they are conventionally described are very different," says Justin Lamb, senior scientist at the Broad Institute in Cambridge, MA. "A physician would describe a disease in terms of its physical symptoms, whereas...