The Active Fuel Management system temporarily deactivates two of the 3.6 L's cylinders in light - load driving conditions to enhance fuel efficiency and seamlessly reactivates them when full power is needed. (gm.com)
This enables scientists to genetically modify phage genomes systematically, provide them with additional functionality, and finally reactivate them in a bacterial «surrogate» — a cell - wall deficient Listeria cell, or L - form. (sciencedaily.com)