Firstly, chemical carcinogens in tobacco smoke might directly induce cervical carcinogenesis.

Natural selection can directly induce the evolution of mutational robustness only when mutation rates are high and population sizes are large.

Active Rac can directly induce cytoskeleton changes and affect gene transcription through activation of JNK.

However, due to feed back loops, one may directly or indirectly induce the other.

Meanwhile, the antibiotics Karen Santorum took probably did not directly induce her labor.

Intracranial injections of amphetamine directly in the nucleus accumbens and intracerbroventricular injections induce a conditioned place preference at certain dosages.

Natural cytotoxicity receptors directly induce apoptosis after binding to ligands that directly indicate infection of a cell.

S cyclins bind to Cdk and the complex directly induces DNA replication.

"In the sensitized patients," he added, "the scratching will not suppress the itch but instead it will directly induce itch and further scratching."