That would be far below, carefully designed, served by mechanisms for maintenance and control.

These function to regulate the expression levels of other genes by several mechanisms.

Changes in the levels of cellular p27 Kip1are regulated by multiple mechanisms.

They enhance plant growth by several direct and indirect mechanisms.

Genetic changes can occur at different levels and by different mechanisms.

But the two drugs act by different biological mechanisms.

"Would you miss new classes of drugs that are antidepressants and work by completely different mechanisms?"

The performance problem can be alleviated (to some extent) by several mechanisms.

These two paradigms seem to work by different mechanisms.

This occurs by different mechanisms inside and outside the mitochondria.