Like workers at a factory or office, proteins in a cell must be in the right department to do their jobs. But scientists have yet to fully map the cell's organization, much less determine how these cellular "employees" may be reassigned in a time of crisis or change. A hostile takeover by a virus, for example, can send a cell's proteins to new stations, from which they may either serve the pathogen's aims or help the cell as it attempts to resist the infection.