1.   Because the drugs circulate around your body through your bloodstream, they affect all your cells.

2.   But the drugs circulate freely in the body and thus do more harm, he said.

3.   Counterfeit drugs have long circulated in other parts of the world.

4.   Once the drug has circulated, light lasers are used to blast away cancerous tissues.

5.   They spread the word when bad drugs are circulating and pass out condoms at raves, the all-night parties that have a backdrop of hypnotic, electronic dance music.

6.   Bad drugs circulated freely, raising the spectre of a mass freak-out.