Studies also show that marijuana contains cancer-causing chemicals typically associated with cigarettes.

But some new details emerged, including the discovery of nitrate, a chemical associated with explosives, in the rubble.

The output of growth hormone, a chemical associated with bodily construction and repair, also remained high throughout the night.

However, many other substances are not filtered out, including alcohol and some chemicals associated with smoking cigarettes.

They said there were were no traces of chemicals associated with plastic explosives.

Besides, she said, she will not expose her workers to a chemical associated with cancer risk.

Uric acid, the chemical associated with gout, is a less common cause of stones.

Nicotine increases the levels of dopamine (a chemical associated with pleasure) in the brain.

Then the researchers measured key chemicals associated with premature aging of the skin due to sun damage.

The researchers measured concentrations of a chemical associated with inflammation in the spinal fluid.