A previous study by Clayton's lab had shown that, as a young finch first learns how to sing, hundreds of genes in its brain quickly respond, producing more or less protein.

VOA: standard.2010.04.05

The company then sends the workers a text or e-mail message so they can respond quickly to an offer.

VOA: special.2009.02.02

The victims are pulled out of rubble. Medical personnel act quickly to respond to injuries and save lives.

VOA: standard.2010.07.26

But the remaining five other patients did not respond as quickly to the insulin infusion and developed low blood sugar because the computer continued to administer medication.

VOA: standard.2010.04.15