Possibly, these models are not mutually exclusive: for instance, a driver mutation might have to occur in a cell with stem cell properties in order for it to elicit its driving force.
The Echo is a bit like the Fire Phone in that regard; it may do some interesting stuff, but its driving force, the beat in its heart, will be to accept your money as efficiently as possible.
The film uses the chaos as its driving force, setting a brisk pace as it cuts between news footage from the time and all the ancillary actions and reactions triggered by the shooting.
Many believe the foundation's future will depend on Mr. Clinton, now 70, always its driving force.
That is fine when it comes to information technology, Mr. Blair said, because government is not its driving force.
Unlike Geert Wilders Freedom Partyy in the Netherlands, its driving force is not resentment of Muslims and immigrants.
Now they shared this gnawing sense that race was beginning to supplant God's love as its driving force.
If London has been shown to be a hub of global money laundering, the property market is its driving force.
WikiLeaks claimed its founders comprised Chinese dissidents, hackers, computer programmers and journalists, but Assange is its driving force.
(Michael Lang, a co-producer of the festival and its driving force, is an executive producer of the film).
The continuous research for an alternative power source due to the perceived scarcity of fuel fossils is its driving force.
